ROAD SAFETY AUDIT. Middlesex Turnpike between Wheeler Road (East) and I-95 Southbound Ramps Town of Burlington. December 21, 2012

ROAD SAFETY AUDIT Middlesex Turnpike between Wheeler Road (East) and I-95 Southbound Ramps Town of Burlington December 21, 212 Prepared For: The Gutierrez Company Prepared By: TEC, Inc. 65 Glenn Street Lawrence, MA 1843 Plan Permit Design Construct

Road Safety Audit Middlesex Turnpike between Wheeler Road (East) and I-95 Southbound Ramps Table of Contents Background...1 Project Data...1 Project Location and Description...3 Middlesex Turnpike... 3 Middlesex Turnpike / Wheeler Road (East)... 3 Middlesex Turnpike / Wheeler Road (West) / Interstate 95 (Route 128 / US 3) Northbound Ramps... 4 Middlesex Turnpike / Interstate 95 (Route 128 / US 3) Southbound Ramps... 4 Audit Observations...6 General Study Area Observations... 6 Middlesex Turnpike / Wheeler Road (East)... 9 Middlesex Turnpike / Wheeler Road (West) / Interstate 95 (Route 128 / US 3) Northbound Ramps... 11 Middlesex Turnpike / Interstate 95 (Route 128 / US 3) Southbound Ramps... 12 Summary of Road Safety Audit...14 List of Appendices Appendix A. Appendix B. Appendix C. Appendix D. Appendix E. Appendix F. RSA Meeting Agenda RSA Audit Team Contact List Detailed Crash Data Speed Regulation Data Traffic Volume Data RSA References List of Figures Figure 1. Locus Map... 5 List of Tables Table 1. Table 2. Table 3. Participating Audit Team Members... 2 Summary of Safety Observations... 15 Potential Safety Enhancement Summary... 16

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Road Safety Audit Middlesex Turnpike between Wheeler Road (East) and I-95 Southbound Ramps Background The Town of Burlington is currently planning roadway improvements along the Middlesex Turnpike corridor in an effort to address existing safety concerns and to increase capacity within the vicinity of the planned 63 South Avenue Burlington Research Center development project by The Gutierrez Company. The Town was recently awarded a MassWorks grant from the Executive Office of Housing and Economic Development (EOHED) for the construction of these roadway improvements. The addition of new vehicle trips to Middlesex Turnpike, which is the urban minor arterial roadway adjacent to the project site, has stimulated roadway improvements and a corresponding Functional Design Report (FDR) to be prepared by Transportation Engineering and Construction, Inc. (TEC, Inc.) of Lawrence, Massachusetts. The project includes work along two different sections of Middlesex Turnpike, one in the Town of Burlington s jurisdiction at Second Avenue / Burlington Mall Road and the other within Massachusetts Department of Transportation (MassDOT) jurisdiction at the I-95 Ramp terminals and Wheeler Road. This Road Safety Audit (RSA) applies only to the intersections within MassDOT s jurisdiction. The purpose of an RSA is to observe, identify, and report all safety issues and identify future opportunities for safety improvements for all roadway users. The MassDOT guidelines require an RSA to be conducted where HSIP-eligible crash clusters are present within the scope of a 25% Design and FDR. An intersection is defined as HSIP-eligible if the intersection is within the top 5% of clusters in its respective Regional Planning Commission s (RPC) boundaries. Along the Middlesex Turnpike corridor, three HSIP-eligible intersection clusters, which were identified on MassDOT s online database and established using crash data from 28-21, are present within the scope of the FDR. Therefore, an RSA was conducted along Middlesex Turnpike at and between the following intersections: Wheeler Road (East) Interstate 95 (also signed as US Route 3 and Route 128) Northbound Ramps / Wheeler Road (West) Interstate 95 (also signed as US Route 3 and Route 128) Southbound Ramps An RSA, as defined by the Federal Highway Administration (FHWA), is the formal safety performance examination of an existing or future road or intersection by an independent, multidisciplinary team. This RSA was conducted during the Preliminary Design (pre-25% Design) stage of intersection and corridor improvements along the Middlesex Turnpike in Burlington, Massachusetts in order to incorporate safety-related design features early in the design process. These roadway improvements are in conjunction with the construction of a private development located along South Avenue in the Town of Burlington. Elements of the RSA will be considered for incorporation into the roadway improvement Project as the design is advanced through the MassDOT design development process in order to obtain a construction Highway Access Permit from District 4. Project Data Transportation Engineering and Construction, Inc. (TEC) of Lawrence, Massachusetts is the prime safety investigation consultant in an RSA for the Middlesex Turnpike from Wheeler Road (East) to the Interstate 95 Southbound Ramps in Burlington, Massachusetts. The RSA was conducted on Tuesday November 27, Page 1

Road Safety Audit Middlesex Turnpike between Wheeler Road (East) and I-95 Southbound Ramps 212 at 1: AM, with the pre- and post-audit meetings held at 63 South Avenue in Burlington, Massachusetts. A copy of the RSA agenda can be found in Appendix A. TEC conducted various other site visits to the audit area as part of its FDR and pre-25% Design work. As presented in Table 1, the audit team consisted of a cross-section of state, regional, and local engineering, planning, enforcement, maintenance and emergency response professionals and was assembled in conjunction with input from the MassDOT Traffic Safety Management Unit. Contact information for all team members is provided in Appendix B. Table 1. Participating Audit Team Members Audit Team Member Agency/Affiliation Bernie Schipelliti Burlington Police Department Michael Patterson Burlington Fire Department Thomas Hayes Burlington Department of Public Works Kristin Kassner Burlington Planning Department Chen-Yuan Wang Boston Region MPO Dennis Taliaferro Massachusetts State Police Debra A. Simon Massachusetts State Police Silpa Munukutla MassDOT Highway Safety Section Corey O Connor MassDOT Highway Safety Section Sara Timoner MassDOT District 4 Traffic Section Constance Raphael MassDOT District 4 Scott Weiss The Gutierrez Company Kevin R. Dandrade, P.E., PTOE TEC, Inc. Samuel W. Gregorio, E.I.T. TEC, Inc. Mikel C. Myers, P.E. TEC, Inc. Audit participants were provided with materials to review prior to the audit meeting. The materials included a summary of traffic volume data (daily and peak hour) and collision diagrams that summarized the type and severity of collisions at the study area intersections. Participants were encouraged to visit the site prior to the audit and were urged to consider elements on MassDOT s Safety Review Prompt List. On the day of the audit, a pre-audit meeting was held at the 63 South Avenue in Burlington to discuss the project s background, the audit process, review the distributed materials, and discuss the some of the issues that Team members had observed individually. The audit site walk consisted of field observations at the audit intersections and roadway locations. Handwritten notes and photographs documented the observations made by audit team members during the site walk. Following the audit site walk, a postaudit meeting was held at 63 South Avenue in Burlington where the Team confirmed the observations made in the field and offered solutions to remedy the safety deficiencies noted in the Site Walk and Pre- Audit meeting. Page 2

Road Safety Audit Middlesex Turnpike between Wheeler Road (East) and I-95 Southbound Ramps Project Location and Description The Road Safety Audit intersection locations were as follows: Middlesex Turnpike / Wheeler Road (East) Middlesex Turnpike / Wheeler Road (West) / Interstate 95 (Route 128 / US Route 3) Northbound Ramps Middlesex Turnpike / Interstate 95 (Route 128 / US Route 3) Southbound Ramps Middlesex Turnpike Middlesex Turnpike generally runs in the north-south direction passing through Burlington from Billerica / Bedford to the north and Lexington / Arlington to the south. The roadway parallels the Northwest Expressway (US Route 3) to the north of Interstate 95 at a typical offset of approximately one-half mile. The Middlesex Turnpike is classified as an urban minor arterial. It is under the jurisdiction of the Town of Burlington, except for a short segment at the Interstate 95 (Route 128 / US 3) interchange and bounded by the Southbound Ramps to the north and Northbound ramps to the south for which it is under the jurisdiction of MassDOT. Between Wheeler Road and Burlington Mall Road / Second Avenue, Middlesex Turnpike is a four- to six-lane, median divided roadway with multiple turn-lanes at the various side street intersections. A sidewalk is provided on the westerly edge of the Middlesex Turnpike from the southern edge of the Barnes and Noble property (opposite the Interstate 95 Southbound Ramps) north to Network Drive. Land uses along the corridor include office, commercial, industrial, and retail uses. The posted speed limit along Middlesex Turnpike is 35 miles per hour (mph) in both the northbound and southbound directions. Speed regulations maintained by MassDOT Highway Division establish a 35 mph speed limit for Middlesex Turnpike (known as Middlesex Street in the regulations). Historic speed regulations are included in Appendix D. Middlesex Turnpike / Wheeler Road (East) Wheeler Road (East) intersects the Middlesex Turnpike to form a three-way, fully-actuated signalized intersection. The intersection is under the jurisdiction of the Town of Burlington. The Wheeler Road (East) westbound approach consists of an exclusive left-turn lane and an exclusive right-turn lane. Directional flow along Wheeler Road (East) is separated by a marked centerline. The Middlesex Turnpike northbound approach consists of a through lane and a shared through / right-turn lane. A two-way left-turn lane (TWLTL), which accommodates turning movement within the Middlesex Turnpike to the south, terminates at this intersection. The Middlesex Turnpike southbound approach consists of an exclusive left-turn lane and two Middlesex Turnpike at Wheeler Road through lanes. Directional flow along the Middlesex (East) (looking south) Turnpike is separated by a marked centerline (with TWLTL) south of the intersection and a raised concrete median with edge striping north of the intersection. A sidewalk is provided along the easterly Page 3

Road Safety Audit Middlesex Turnpike between Wheeler Road (East) and I-95 Southbound Ramps side of the Middlesex Turnpike, south of Wheeler Road (East). There are no pedestrian facilities to cross the intersection. Middlesex Turnpike / Wheeler Road (West) / Interstate 95 (Route 128 / US 3) Northbound Ramps Wheeler Road (West) and the I-95 Northbound Ramps intersect the Middlesex Turnpike to form a four-way, fully actuated signailzed intersection. The intersection is under the jurisdiction of MassDOT. The Wheeler Road (West) eastbound approach consists of a wide single generalpurpose travel lane that operates as a two lane approach. Directional flow along Wheeler Road (West) is separated by a marked centerline. The I-95 Northbound Ramp westbound approach consists of an exclusive left-turn lane, a shared left-turn / through lane, and a channelized rightturn lane under YIELD control. Directional flow on the ramps is separated by a raised grass median. The Wheeler Road (West) and I-95 Northbound Ramps do not align on opposing sides of the intersection. Details of the alignment are reviewed in the observation section. The Middlesex Turnpike northbound approach consists of a shared left-turn / though lane, a through lane, and a channelized right-turn lane under YIELD control. The Middlesex Turnpike southbound apporach consists of two exclusive left-turn lanes, a through lane, and a shared through / right-turn lane. Directional flow along the Middlesex Turnpike is separated by a raised concrete median. No sidewalks or crosswalks are present at this intersection. Middlesex Turnpike / Interstate 95 (Route 128 / US 3) Southbound Ramps Middlesex Turnpike at I-95 NB Ramps (looking north) The I-95 Southbound Ramps intersect the Middlesex Turnpike to form a three-way, fully-actuated signalized intersection. The intersection is under the jurisdiction of MassDOT. The I-95 Southbound Ramp westbound approach consists of two exclusive left-turn lanes and a channelized right-turn lane under YIELD control. Directional flow along the I-95 Ramps is separated by a raised landscaped median. The Middlesex Turnpike northbound approach consists of three through lanes and a channelized right-turn lane under YIELD control. The Middlesex Turnpike southbound approach consists of two exclusive left-turn lanes and two through lanes. Directional flow along the Middlesex Turnpike is separated by a raised concrete median. A sidewalk is present along the westerly edge of the Middlesex Turnpike north of the intersection along the Barnes and Noble property frontage. Middlesex Turnpike at I-95 SB Ramps (looking north) Page 4

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Road Safety Audit Middlesex Turnpike between Wheeler Road (East) and I-95 Southbound Ramps Audit Observations Prior to the RSA site walk, a pre-audit meeting was held at 63 South Avenue in Burlington, MA. This pre-audit meeting included brief introductions, an overview of the project and RSA process, and a summary of volume, speed, and safety characteristics along the segment of the Middlesex Turnpike. Audit participants then conducted a site walk as a group to observe the roadway segment and intersections. Each participant was advised to offer their concerns and comments related to safety deficiencies along the roadway segment and study area intersections. Based on these field observations and discussions, the RSA team determined that the Middlesex Turnpike corridor has the following general issues that negatively impact safety: Conflicting Lane Configuration Signage, Faded and Missing Pavement Markings, Traffic Congestion / Long Vehicle Queues, Excessive Red-Light Running, Limited Lighting, Limited Pedestrian Accommodations, Blocked From View or Missing Street Signage, Inadequate or damaged signal equipment, Blocked Drainage Structures, Fair to Poor Pavement Conditions, and Lack or Misplaced Freeway Signage The following sections describe in more detail the safety issues determined during the RSA. Several of these require further evaluation and design work to develop appropriate safety enhancements. More specific safety challenges located at specific audit area intersections are also included. General Study Area Observations The RSA team noted several general safety issues throughout the Middlesex Turnpike corridor. A summary of those general safety concerns throughout the study area are as follows: Conflicting Lane Configuration Signage The lane configuration signage (R3-8 series) along the Middlesex Turnpike southbound between the Interstate 95 Southbound and Northbound Ramps are conflicting. Over the 25 foot roadway segment, three sets of lane configuration signage are visible to the roadway user. The first visible sign (L,L,T,TR), shown at the left of the image, is the correct lane configuration but is 12 feet in advance of the signed roadway configuration downstream. The second visible sign (L,L,TR), shown in the center of the image, is incorrect. The Lane Configuration Signage along Middlesex Turnpike Southbound Page 6

Road Safety Audit Middlesex Turnpike between Wheeler Road (East) and I-95 Southbound Ramps third visible sign (L,L), on the far right of the image in the distance, is along the dual left-turn lane approaching the I-95 Northbound Ramps and only shows the dual left-turn lanes in its configuration which is incorrect for the entire four-lane approach. These conflicting lane configuration signage causes confusion amongst drivers attempting to weave from right to left in order to turn left onto the I-95 Northbound On-ramp. The second lane configuration sign (L,L,TR) conveys to unfamiliar drivers that the second far right lane is a turn lane causing quick weaves and lane changes within the intersection as the driver becomes aware of their lane choice error. Pavement Markings Pavement markings are severely faded along several portions of the audit area and not visible along the Middlesex Turnpike directly under the Interstate 95 overpass. The lack of pavement markings decreases the visibility of defined lane use in a section of roadway that experiences an increased amount of weaving and lane change movements. The Middlesex Turnpike northbound between the Interstate 95 Northbound and Southbound Ramps is typically striped to accommodate three travel lanes. At the current time, the pavement markings are faded to a point Pavement Markings along Middlesex where it seems only two travel lanes exist. Several Turnpike. pavement arrows delineating turning movements are also faded at the three intersections. Traffic Congestion / Queues Due to the numerous commercial, retail, and office uses along the Middlesex Turnpike, traffic volumes in the area generally increase during the weekday peak periods and during Saturday peak periods. The traffic volumes increase significantly during the month of December given the corridor s location in close proximity to the Burlington Mall. These additional traffic volumes result in increased traffic congestion along the Middlesex Turnpike, the Interstate 95 Ramps, and the side streets such as Wheeler Road. With the close proximity of the Interstate 95 Northbound Ramps and Wheeler Road (East), traffic often queues from one intersection into the upstream intersection. These queues can cause blocked intersections as part of a grid-lock condition. A representative of the Burlington Police Department noted that police are typically assigned to this roadway segment to deter intersection blockage, however; intersection blocking still occurs regularly during peak holiday shopping periods. A representative of the Burlington Fire Department researched and noted that it takes approximately 3.5 minutes for a fire response vehicle to travel from Station #2 (Terrace Hall Avenue @ Middlesex Turnpike) to the mall and it takes approximately 6.5 minutes to travel from Station #2 to Middlesex Commons. This equates to 3 extra minutes of travel time for an additional 4, feet of travel. Page 7

Road Safety Audit Middlesex Turnpike between Wheeler Road (East) and I-95 Southbound Ramps Red-Light Running A representative of the Burlington Police Department noted that red-light running at these intersections is prevalent and is usually caused by user frustration with congestion during peak periods. The Police representative also noted the difficulty of enforcement of red-light running and other such roadway violations as there is no safe location to pull-over vehicles along the Middlesex Turnpike. Lighting Although ambient light and street lighting is present along the Middlesex Turnpike, there is no under-decking lighting along the Middlesex Turnpike under the Interstate 95 overpass. According to MassDOT, lighting on the under-decking has existed in the past and has since been removed and not replaced. In addition, highway lighting within the cloverleaf interchange is present, but often not functioning properly. At the time of the RSA, all cloverleaf lighting was functioning and operational. Pedestrian Accommodations A sidewalk is currently constructed along the westerly side of the Middlesex Turnpike from the Barnes and Noble property and continuing northbound to Network Drive. South of this location, a sidewalk is intermittently constructed along the westerly side of the roadway and under the Interstate 95 underpass only. There are no current pedestrian crossing locations across the Middlesex Turnpike in the vicinity of the Audit area. A Town representative noted that various office and commercial Break in Sidewalk along Westerly Side of employees will cross Middlesex Turnpike near Middlesex Turnpike Wheeler Road (East) to access the Dunkin Donuts on the southeast corner of the intersection. In addition to a lack of sidewalk infrastructure between the intersections, no pedestrian signal equipment is present at the intersections and no pedestrian phasing is included in the signal timing plan. Blocked or Missing Street Signage An RSA member noted that the visibility of the Wheeler Road and Middlesex Turnpike street sign plaques is limited due to the sign posts position behind a utility pole offset from the edge of roadway. In addition, there is no Middlesex Turnpike sign plaque on the Wheeler Road (West) sign post opposite the Interstate 95 northbound ramps. Finally, street name plaques are mounted at different heights at each different intersection in the Audit area and along the Middlesex Turnpike corridor. Signal Equipment There are several signal equipment deficiencies which are listed below: o All of the signal housings at all three intersections lack retro-reflective back-plates, which would clearly define individual signal housing to the roadway user. o The left-turn signal housing on the Wheeler Road (East) westbound approach is not clearly centered on the approach lane. o All three signals are equipped with emergency pre-emption. However, upon observation, the pre-emption at the Middlesex Turnpike / Interstate 95 Northbound Ramps / Wheeler Page 8

Road Safety Audit Middlesex Turnpike between Wheeler Road (East) and I-95 Southbound Ramps o Road (West) intersection did not activate as an ambulance traversed through. A MassDOT technician corrected the programming immediately following the audit. The Middlesex Turnpike northbound right-hand through lane loop detector at the Interstate 95 Northbound Ramps is currently faulting. The line was recently cut as part of trenching within the roadway and was not replaced by the Town of Burlington. Pavement Condition It was noted that the pavement is in fair condition along the Middlesex Turnpike corridor. However there are scattered pot-hole locations, especially near several drainage structures. In addition, there is a large quantity of cracking on the pavement which has been repeatedly filled-in by the Town of Burlington. There is significant truck traffic due to the number of nearby retail and commercial businesses, which causes increased wear on pavement conditions. Drainage Structures Several RSA members noted that a few drainage structures along the Middlesex Turnpike were significantly blocked by debris and built-up sediments. Obstructed drainage structures can cause severe water ponding and minor flooding on roadway segments with raised curbing and level or deflated roadway surfaces. With excessive vehicle speeds observed during off-peak hours along the Middlesex Turnpike corridor, this ponding may become a substantial safety concern. All drainage structures along the Middlesex Turnpike corridor should be cleared of all potential obstructions by their respective maintenance crews. Obstructed Catch Basin along Middlesex Turnpike near Wheeler Road (West) Freeway Signage On the southbound approach of Middlesex Turnpike, there is a lack of clear signage that defines both the southbound and northbound ramps of Interstate 95. Green guide signs were recently installed and are located within the ramp medians. These signs give vague direction to the roadway user. Although the signs are visible from a distance, no signs decipher lane information to access the I-95 Ramps. Drivers tend to focus on following the large horizontal arrow pointing to the ramps and disregard the lane configuration signage along the roadway causing unorganized weaving. No clearly defined I-95 Shield is visible along the approach. A Route 128 South sign is visible, but is located on the right-side of the roadway away from the southbound left-turn lane onto the ramp. This may cause excessive weaving and lane changes as a result of roadway user making delayed route choice decisions on the approach. Middlesex Turnpike / Wheeler Road (East) The intersection of Middlesex Turnpike / Wheeler Road (East) is considered HSIP-eligible. Collision data for this intersection was provided by the Town of Burlington Police Department for the period of January 29 to December 211 and supplemented by MassDOT for the period of January 28 to December 21. The data shows a total of 46 reported collisions in the area of the intersection during the four-year study period. The crash rate for this intersection is slightly higher than the statewide and Page 9

Road Safety Audit Middlesex Turnpike between Wheeler Road (East) and I-95 Southbound Ramps district-wide averages for unsignalized intersections with.84 crashes per million entering vehicles (MEV). A summary of the intersection audit is described below. There were 16 angle-type collisions (35%) at this intersection over the four-year study period. Of the locatable angled collisions, approximately half (6 of 11) involved a vehicle exiting Wheeler Road (East). There were also 7 rear-end crashes (15%) at this intersection over the four-year study period. Of the locatable rear-end collisions, a majority (4 of 6) occurred on the Middlesex Turnpike northbound approach. Although most crash data did not specify a detailed vehicle action prior to crash, five (5) collisions at this intersection involved vehicles attempting to enter travel lanes or vehicles changing lanes. The RSA team noted several general safety issues specifically at the intersection of Middlesex Turnpike / Wheeler Road (East). A summary of those general safety concerns at the intersection are as follows: Southbound Left-Turn Lane Definition RSA team members noted that the left-turn from Middlesex Turnpike southbound onto Wheeler Road East is not clearly defined for the receiving area for vehicles exiting the Interstate 95 Northbound Off-ramps and Middlesex Turnpike southbound vehicles. There is no clear transition into the southbound exclusive left-turn lane, and vehicles exiting the ramps and Middlesex Turnpike might unexpectedly find themselves in an exclusive left-turn lane while intending to proceed through.. This may cause drivers that are unfamiliar with the lane configuration to weave in and out of the left-turn lane approaching Wheeler Road (East) from the north. Signal Housing Location - As stated previously, it was noted that the left-turn signal housing on the Wheeler Road westbound approach is not clearly centered on the approach lane and should be appropriately moved within a proper cone of vision. Intersection Blockage As stated previously, with the close proximity between the Interstate 95 Northbound Ramps and Wheeler Road (East), traffic tends to queue from one intersection into the upstream intersection. This queue often causes blocked intersections disallowing side street traffic from exiting. A representative of the Burlington Police Department noted that police are typically assigned to this roadway segment to deter intersection blockage, however; intersection blocking still occurs regularly. Pedestrian Accommodations Pedestrians are often seen crossing the Middlesex Turnpike at this location in order to access the Dunkin Donuts on the southeast corner of the intersection. However, no defined crossing opportunities exist at this intersection and there are currently no additional sidewalks except the sidewalk along the Dunkin Donuts frontage. Blocked Street Signage - An RSA member noted that the visibility of the Wheeler Road and Middlesex Turnpike street sign plaques are limited due to the sign posts position behind a utility pole offset from the edge of roadway. This had the potential to cause confusion with roadway users, especially as Wheeler Road in this location is separated east and west by one block along Middlesex Turnpike. Page 1

Road Safety Audit Middlesex Turnpike between Wheeler Road (East) and I-95 Southbound Ramps Middlesex Turnpike / Wheeler Road (West) / Interstate 95 (Route 128 / US 3) Northbound Ramps The intersection of Middlesex Turnpike / Wheeler Road (West) / Interstate 95 (Route 128 / US 3) Northbound Ramps is specifically not considered HSIP-eligible. However, the Middlesex Turnpike surface ramp intersection is part of the larger Interstate 95/ US Route 3 interchange which as a whole has been classified as HSIP-eligible. Collision data for this intersection was provided by MassDOT for the period of January 28 to December 21 and supplemented by the Town of Burlington Police Department for the period of January 29 to December 211. The data shows a total of 39 reported collisions in the area of the intersection during the four-year study period. The crash rate for this intersection is significantly lower than the statewide and district-wide averages for unsignalized intersections with.53 crashes per million entering vehicles (MEV). A summary of the intersection audit is described below. There were 16 rear-end collisions (41%) at this intersection over the four-year study period. Of the locatable rear-end collisions; a majority (6 of 11) involved a vehicle travelling north along Middlesex Turnpike. Two (2) of these rear-end collisions occurred within the Interstate 95 Northbound Ramp rightturn channelized lane resulting from vehicles stopping at the end of the ramp. There were also 4 angletype collisions (9%) at this intersection over the four-year study period. Of the locatable rear-end collisions, a majority (3 of 4) occurred on the Middlesex Turnpike northbound approach resulting from vehicles attempting to turn-left into Wheeler Road (West) and may be a result of left-turning vehicles unable to see oncoming traffic. Not all of the MassDOT Crash Data clearly decipher between collisions that occurred at the surface intersections of the Interstate 95 (Route 128 / US 3) Northbound Ramps with the Middlesex Turnpike versus collisions that may have occurred along Middlesex Turnpike or Interstate 95 near the interchange. In addition, the data does not clearly indicate whether the collisions occurred at the northbound or southbound ramps to/from the Middlesex Turnpike. After review of individual crash reports, a large number of crashes reported at this junction were found not to be at the surface intersections. To remain conservative, those crashes whose location could not be clearly deciphered were included within the collision data. As a result, the crash information may not be representative of the safety characteristics of the northbound surface ramp intersection with the Middlesex Turnpike. The RSA team noted several general safety issues specifically at the intersection of Middlesex Turnpike / Wheeler Road (West) / Interstate 95 (Route 128 / US Route 3) Northbound Ramps. A summary of those general safety concerns at the intersection are as follows: Lane Usage / Traffic Control on Northbound Ramps Currently, a YIELD sign is present at the terminus of the I-95 Northbound off-ramp right-turn channel lane. This YIELD sign is currently not warranted as the turn-lane enters its own dedicated lane along the Middlesex Turnpike which is not clearly defined due to lack of pavement markings. Vehicles tend to stop, then progress, and stop again while attempting to enter the Middlesex Turnpike traffic flow. A representative from the Burlington Police Department noted that this causes frequent rear-end crashes and near misses within the channelized right-turn lane. As noted above, two crashes were identified as a result of this movement. Opposing Lane Alignment - Vehicles exiting the I-95 northbound ramps do not have a direct track to access the opposing Wheeler Road (West) receiving lane. Concurrently, vehicles exiting Wheeler Road (West) attempting to access the I-95 northbound on-ramp also must divert and Page 11

Road Safety Audit Middlesex Turnpike between Wheeler Road (East) and I-95 Southbound Ramps correct a thru movement across the intersection. This is especially difficult for unfamiliar roadway users attempting to cross Middlesex Turnpike. Future potential exists to reset the alignment of both the ramps and Wheeler Road (West); however, this would include major right-of-way impacts. Northbound Left-turns Northbound left-turn movements at the signalized intersection are considered unsafe to potential roadway users as the intersection does not have a protected left-turn lane View of Alignment of Wheeler Road (West) which operates under an exclusive phase. verses the I-95 Northbound Ramps Furthermore, the northbound left-turn from (from Wheeler Road) Middlesex Turnpike into Wheeler Road (West) is unsafe as turning vehicles cannot clearly see opposing southbound through traffic as they are blocked by queued traffic in the dual southbound left-turn lanes. A LEFT-TURN YIELD ON GREEN BALL sign (R1-12) was requested by the Burlington Police Department and installed and has decreased the number of angled crashes as noted by a Burlington Police Department representative. Loop Detection - The Middlesex Turnpike northbound right-hand through lane loop detector at the Interstate 95 Northbound Ramps is currently faulting. A representative of the Town of Burlington noted that the line was recently cut as part of trenching within the roadway and was not replaced by the Town of Burlington. Middlesex Turnpike / Interstate 95 (Route 128 / US 3) Southbound Ramps The intersection of Middlesex Turnpike / Interstate 95 (Route 128 / US 3) Southbound Ramps is specifically not considered HSIP-eligible. However, the Middlesex Turnpike surface ramp intersection is part of the larger Interstate 95/ US Route 3 interchange which as a whole has been classified as HSIPeligible. Collision data for this intersection was provided by MassDOT for the period of January 28 to December 21 and supplemented by the Town of Burlington Police Department for the period of January 29 to December 211. The data shows a total of 45 reported collisions in the area of the intersection during the four-year study period. The crash rate for this signalized intersection is significantly lower than the statewide and district-wide averages for unsignalized intersections with.59 crashes per million entering vehicles (MEV). There were 1 angle-type collisions (22%) at this intersection over the four-year study period. There were also 12 rear-end crashes (27%) at this intersection over the four-year study period. Of the locatable rear-end collisions, a majority (4 of 7) occurred on the Middlesex Turnpike southbound approach. Four (4) collisions were classified as sideswipe collisions. Although most crash data did not specify a detailed vehicle action prior to crash, five (5) collisions at this intersection involved vehicles attempting to enter travel lanes or vehicles changing lanes. Not all of the MassDOT Crash Data clearly decipher between collisions that occurred at the surface intersections of the Interstate 95 (Route 128 / US 3) Southbound Ramps with the Middlesex Turnpike versus collisions that may have occurred along Middlesex Turnpike or Interstate 95 near the interchange. In addition, the data does not clearly indicate whether the collisions occurred at the northbound or Page 12

Road Safety Audit Middlesex Turnpike between Wheeler Road (East) and I-95 Southbound Ramps southbound ramps to/from the Middlesex Turnpike. After review of individual crash reports, a large number of crashes reported at this junction were found not to be at the surface intersections. To remain conservative, those crashes whose location could not be clearly deciphered were included within the collision data. As a result, the crash information may not be representative of the safety characteristics of the southbound surface ramp intersection with the Middlesex Turnpike. The RSA team noted several general safety issues specifically at the intersection of Middlesex Turnpike / Interstate 95 (Route 128 / US Route 3) Southbound Ramps. A summary of those general safety concerns at the intersection are as follows: Red-Light Running A representative of the Burlington Police Department noted that red-light running at the intersection of Middlesex Turnpike / Interstate 95 Southbound Ramps is prevalent and is usually caused by user frustration with congestion during peak periods. The Police representative also noted the difficulty of enforcement of red-light running and other such roadway violations in the area as there is no safe location to pull-over vehicles along the Middlesex Turnpike. Lack of Curb Reveal There is little to no curb reveal along the Middlesex Turnpike median at the intersection with the Interstate 95 Southbound Ramps. Vehicles turning left while exiting the off-ramp and vehicles making northbound U-turns tend to cross over the median during the turning movement. U-turns U-Turns are prevalent along the entire Middlesex Turnpike corridor to the north and south of the audit area. U-turns were notably occurring at the Middlesex Turnpike s intersection with the Interstate 95 Southbound Ramps on the northbound approach before the destruction of the former Burlington Dodge Raised Concrete Median along Middlesex Turnpike. Dealership site which was between Interstate 95 and the Barnes and Noble property. With the development of Middlesex Marketplace, which will be constructed on the former Burlington Dodge site, U-turns may return to this location if the site s driveway approach is not aligned with the signalized intersection. Crash data summaries and a collision diagram are included in Appendix C. Page 13

Road Safety Audit Middlesex Turnpike between Wheeler Road (East) and I-95 Southbound Ramps Summary of Road Safety Audit Based on the observations and discussions, the RSA team identified safety issues along the Middlesex Turnpike corridor between Wheeler Road (East) and the Interstate 95 Southbound Ramps. Further evaluation and design work may be necessary to develop safety enhancements to the roadway and intersections. The safety issues are summarized in Table 2. For each safety issue, the RSA team has described the potential safety enhancement, its potential safety payoff, the estimated time frame for completion, the estimated construction cost, and the jurisdictional agency. Design plans are in progress for the Audit s location area and the scope of the roadway improvements shall be made consistent with the MEPA permitting review/approval process and all necessary access permits for the Burlington Research Center. The approved project limits of the improvements, to be funded by the MassWorks grant, begin just south of the I-95 southbound ramps and extend to the southbound approach to the intersection of the Middlesex Turnpike with Wheeler Road (East). The current scope will continue to be refined through coordination between the Project Team, the Town of Burlington, and MassDOT. As design plans are in the pre-25% Design phase, some potential safety enhancements will be incorporated into the design for the 25% Design Submission. The summary of potential safety enhancements are summarized in Table 3 and include a column identifying the improvements within the current project design. As the design plans progress, the safety enhancements, identified by the RSA, will be incorporated into the design to the extent feasible based upon agreements between the Project Team, the Town of Burlington, and MassDOT. The time frame is categorized as short-term (<1 year), mid-term (1 to 3 years), or long-term (>3 years). The costs are categorized as low (<$1,), medium ($1,1 to $5,), or high (>$5,1). Page 14

Road Safety Audit Middlesex Turnpike between Wheeler Road (East) and I-95 Southbound Ramps Table 2. Summary of Safety Observations Location General Study Area Observations Middlesex Turnpike @ Wheeler Road (East) Middlesex Turnpike @ Wheeler Road (West) / Interstate 95 Northbound Ramps Middlesex Turnpike @ Interstate 95 Southbound Ramps Safety Observation 1. Conflicting Lane Configuration Signage 2. Faded / Non-Existent Pavement Markings 3. Traffic Congestion / Long Vehicle Queues 4. Red-Light Running 5. Limited Lighting 6. Limited Pedestrian Accommodations 7. Blocked from View or Missing Street Signage 8. Inadequate or Damaged Signal Equipment (lack of signal housing back-plates) 9. Fair to Poor Pavement Conditions 1. Obstructed Drainage Structures 11. Lack or Misplaced Freeway Signage 12. Southbound Left-turn Lane Definition 13. Location of Signal Housing 14. Intersection Blockage 15. Pedestrian Accommodations 16. Blocked from View Street Signage 17. Lane Usage / Traffic Control on Northbound Ramps 18. Opposing Lane Alignments 19. Northbound Left-turn safety 2. Deficient Signal Equipment 21. Faded / Non-Existent Pavement Markings 22. Red-Light Running 23. Lack of Curb Reveal 24. Excessive U-Turns Page 15

Road Safety Audit Middlesex Turnpike between Wheeler Road (East) and I-95 Southbound Ramps Table 3. Potential Safety Enhancement Summary Safety Issue Conflicting Lane Configuration Signage along Middlesex Turnpike Faded or Non-existent pavement markings Long Vehicle Queues Potential Safety Enhancement Remove all lane configuration signage that conflicts with marked lanes along Middlesex Turnpike Reapply all pavement markings from Wheeler Road (East) to the Interstate 95 Southbound Ramps Examine signal timing, phasing, and coordination at all study area intersections and adjust timings (if practical) to increase capacity Safety Payoff Time Frame Cost Incorporated Into Current Project Design Medium Short-Term Low-Cost YES High Short-Term Mid-Cost YES Medium Short-Term Low-Cost YES Jurisdictional Agency MassDOT / Town of Burlington MassDOT / Town of Burlington MassDOT / Town of Burlington Limited Lighting Block or Missing Street Signage Faulting Loop Detection Install under-decking lighting under the Interstate 95 overpass Cloverleaf lighting should be periodically checked and maintained. Replace and repair lighting within the I-95 cloverleaf interchange if functioning improperly. Replace street signage plaques along the Middlesex Turnpike as necessary Replace faulting loop detector within the northbound right-hand through lane of Middlesex Turnpike at the I-95 NB Ramps. This loop was cut during Town of Burlington trenching activities and should be replaced by the Town. Medium Mid-Term Mid-Cost Future Project MassDOT Medium Short-Term Mid-Cost Future Project MassDOT Low Short-Term Low-Cost YES Town of Burlington Medium Short-Term Low-Cost As part of 25% Design, a mill and overlay will be conducted at this intersection which will require the installation of new loop detection within each lane. Town of Burlington Page 16

Road Safety Audit Middlesex Turnpike between Wheeler Road (East) and I-95 Southbound Ramps Table 3 (Continued) - Potential Safety Enhancement Summary Safety Issue Deficient Signal Equipment Pavement Conditions Obstructed Drainage Structures Pedestrian Accommodations Intersection Blockage Potential Safety Enhancement Install retro-reflective back-plates to signal housings at all intersections Move westbound left-turn signal housing at Wheeler Road (East) to better align with approach lane Replace loop detectors as necessary Rehabilitate pavement surface along the Middlesex Turnpike through mill and overlay. Clear obstructions from drainage structures with regular maintenance Reconstruct sidewalk along westerly side of Middlesex Turnpike from Barnes and Noble to Wheeler Road (East) Investigate potential crossing opportunities across Middlesex Turnpike. Construct sidewalks and ADA compliant wheelchair ramps at locations where sidewalks are not currently defined. Install a DO NOT BLOCK INTERSECTION sign (R1-7) at the intersection of Middlesex Turnpike / Wheeler Road (East) Safety Payoff Time Frame Cost Incorporated Into Current Project Design Medium Short-Term Mid-Cost YES Jurisdictional Agency MassDOT / Town of Burlington Low Short-Term Low-Cost YES Town of Burlington Low Short-Term Mid-Cost YES Medium Short-Term High-Cost YES Low Mid-Term Mid-Cost YES Low Long-Term High-Cost Future Project Low Long-Term High-Cost Future Project MassDOT / Town of Burlington MassDOT / Town of Burlington MassDOT / Town of Burlington MassDOT / Town of Burlington MassDOT / Town of Burlington Low Short-Term Low-Cost YES Town of Burlington Page 17

Road Safety Audit Middlesex Turnpike between Wheeler Road (East) and I-95 Southbound Ramps Table 3 (Continued) - Potential Safety Enhancement Summary Safety Issue Rear-end Collisions on I-95 NB Ramp Right-Turn Channelized Lane Lack of Curb Reveal within Middlesex Turnpike Median at I-95 SB Ramps Pavement Conditions Left-Turn Movement from Middlesex Turnpike Southbound to Wheeler Road (East) Left-Turning Movement from Middlesex Turnpike Northbound to Wheeler Road (West) Potential Safety Enhancement Reapply pavement markings along Middlesex Turnpike southbound to clearly define three lanes of travel and eliminate YIELD condition. Right-turn channel lane should enter a defined dedicated lane. Reconstruct raised asphalt median to include a well-defined curb reveal. Rehabilitate pavement surface along the Middlesex Turnpike through mill and overlay. Reconstruct median within the Middlesex Turnpike to provide protection for the left-turn lane prior to intersection. This will define two (2) receiving lanes for vehicles exiting the I-95 NB Ramps and traveling southbound to avoid potential weave movement. Construct a left-turn lane on the Middlesex Turnpike northbound approach and investigate altering signal phasing at this intersection to incorporate a protected left-turn on northbound approach. Safety Payoff Time Frame Cost Low Short-Term Low-Cost Low Mid-Term Mid-Cost Incorporated Into Current Project Design As part of 25% Design, a third thru lane along Middlesex Turnpike SB will reinstate the need for a YIELD control approach from the NB ramps which will be improved with pavement markings/signs. Future Project (To be investigated as part of roadway improvements with other developments along Middlesex Turnpike.) Medium Mid-Term High-Cost YES Medium Short-Term Mid-Cost YES Jurisdictional Agency MassDOT MassDOT MassDOT / Town of Burlington MassDOT / Town of Burlington High Mid-Term High-Cost YES MassDOT Page 18

Road Safety Audit Middlesex Turnpike between Wheeler Road (East) and I-95 Southbound Ramps Table 3 (Continued) - Potential Safety Enhancement Summary Safety Issue Opposing Lane Alignments of Wheeler Road (West) and I-95 NB Ramps Middlesex Turnpike Guide Signs Potential Safety Enhancement Option 1: Minor curbing modifications to the NB Ramp approach and lane tracking markings across the Middlesex Turnpike to guide vehicles to the opposing roadway Option 2: Realign both Wheeler Road (West) and/or the I-95 NB Ramps to improve alignment across the intersection Install R3-8 series signs with additional text for guidance and/or overhead guide signs where feasible. Safety Payoff Time Frame Cost Incorporated Into Current Project Design Jurisdictional Agency Medium Short-Term Mid-Cost YES MassDOT Medium Long-Term High-Cost Future Project Medium Mid-Term Mid-Cost Future Project MassDOT / Town of Burlington MassDOT / Town of Burlington Page 19

Road Safety Audit Middlesex Turnpike between Wheeler Road (East) and I-95 Southbound Ramps Appendix A. RSA Meeting Agenda

Road Safety Audit Middlesex Turnpike at Wheeler Road (East) & at I-95 Northbound & Southbound Ramps Meeting Location: 63 South Avenue Burlington, MA November 27, 212 1: AM 12: noon Type of meeting: Attendees: Please bring: High Crash Location Road Safety Audit Invited Participants to Comprise a Multidisciplinary Team Thoughts and Enthusiasm!! 1: AM Welcome and Introductions 1:15 AM Review of Site Specific Material Crash, Speed & Volume Summaries provided in advance Existing Geometries and Conditions 11: AM Visit the Site Drive to LOCATION As a group, identify areas for improvement 11:3 AM Post Visit Discussion / Completion of RSA Discuss observations and finalize findings Discuss potential improvements and finalize recommendations 12: noon Adjourn for the Day but the RSA has not ended Instructions for Participants: Before attending the RSA on November 27th, participants are encouraged to drive through the intersection and complete/consider elements on the RSA Prompt List with a focus on safety. All participants will be actively involved in the process throughout. Participants are encouraged to come with thoughts and ideas, but are reminded that the synergy that develops and respect for others opinions are key elements to the success of the overall RSA process. After the RSA meeting, participants will be asked to comment and respond to the document materials to assure it is reflective of the RSA completed by the multidisciplinary team.

Road Safety Audit Middlesex Turnpike between Wheeler Road (East) and I-95 Southbound Ramps Appendix B. RSA Audit Team Contact List

Road Safety Audit Middlesex Turnpike between Wheeler Road (East) and I-95 Southbound Ramps Participating Audit Team Members Date: Tuesday November 27, 212 Location: 63 South Avenue, Burlington, MA Audit Team Members Agency/Affiliation Email Address Phone Number Name Agency Email xxx-xxx-xxxx Bernie Schipelliti Burlington Police Department bschipelliti@bpd.org 781-55-4937 Michael Patterson Burlington Fire Department mpatterson@burlmass.org 781-27-1926 Thomas Hayes Burlington DPW thayes@burlmass.org 781-27-164 Kristin Kassner Burlington Planning Department kkassner@burlmass.org 781-27-1645 Chen-Yuan Wang Boston Region MPO cwang@ctps.org 617-973-89 Dennis Taliaferro Massachusetts State Police Dennis.taliaferro@massmail.stat e.ms.us - Debra A. Simon Massachusetts State Police Debra.simon@massmail.state.m a.us 978-369-41 Silpa Munukutla MassDOT Highway Safety Section Silpa.munukutla@state.ma.us 857-368-9637 Corey O Connor MassDOT Highway Safety Section Corey.oconnor@state.ma.us 857-368-9638 Sara Timoner MassDOT District 4 Traffic Section Sara.timoner@state.ma.us 781-641-8435 Constance Raphael MassDOT District 4 Connie.raphael@state.ma.us 781-641-8468 Scott Weiss The Gutierrez Company sweiss@gutierrezco.com 781-272-7 Kevin R. Dandrade, P.E., PTOE TEC, Inc. kdandrade@tecmass.com 978-794-1792x145 Samuel W. Gregorio, E.I.T. TEC, Inc. sgregorio@tecmass.com 978-794-1792x138 Mikel C. Myers, P.E. TEC, Inc. mmyers@tecmass.com 978-794-1792x126

Road Safety Audit Middlesex Turnpike between Wheeler Road (East) and I-95 Southbound Ramps Appendix C. Detailed Crash Data This appendix should include detailed crash analysis such as collision diagrams and crash data [state specific crash source and other details so that an evaluation of the effectiveness of the improvements may be performed.]

Middlesex Turnpike at Wheeler Road East [MassDOT and Town of Burlington Crash Data] Crash Date Day of Week Crash Year 28 Crash Time Crash Severity Number of Vehicles Total Nonfatal Injuries Total Fatal Injuries Manner of Collision Vehicle Action Prior to Crash Vehicle Travel Directions Most Harmful Events Vehicle Configuration Road Surface Condition Ambient Light Weather Condition At Roadway Intersection Distance from Nearest Roadway Intersection Non Motorist Type 4 Feb 28 Monday 6:3 PM Not Reported 2 Angle 18 May 28 Sunday 8: AM damage only (none injured) 2 Angle ahead / V2:Turning left ahead / V2:Travelling straight ahead V1:Not reported / V1:Westbound / V2:Southbound motor vehicle in traffic / V2: Collision with motor vehicle in traffic V1: Not reported / V2: Not reported V2:Passenger car Dry Dawn Clear V2:Passenger car Dry Daylight Clear / MIDDLESEX TURNPIKE 18 Jun 28 Wednesday 8: AM Not Reported 2 Angle 19 Jul 28 Saturday 6:5 AM Not Reported 2 Not reported ahead / V2:Travelling straight ahead V1: Not reported / V1:Not reported / V1:Not reported / motor vehicle in traffic / V2: Collision with motor vehicle in traffic V1: Not reported / V2: Not reported V1: Not reported / V2:Passenger car Dry Daylight Clear V2:Passenger car Not reported Not reported Not Reported 28 Jul 28 Monday 8:19 AM damage only (none injured) 2 Sideswipe, same direction V1: Turning right / V2:Travelling straight ahead V1:Not reported / motor vehicle in traffic / V2: Collision with motor vehicle in traffic V1: Tractor/semi trailer / Dry Daylight Clear 2 / MIDDLESEX TURNPIKE 7 Oct 28 Tuesday 11:3 AM Non fatal injury 2 2 Rear end V1: Slowing or stopped in traffic / V2:Travelling straight ahead V1:Northbound / V2:Northbound motor vehicle in traffic / V2: Collision with motor vehicle in traffic V1: Not reported / V2:Not reported Dry Daylight Clear/Clear 1 Dec 28 Wednesday 6:15 AM Non fatal injury 2 1 Angle V1: Entering traffic lane / V2:Travelling straight ahead V1:Northbound / V2:Northbound V1: Not reported / V2: Not reported V2:Light truck(van, minivan, panel, pickup, sport utility) with only four tires Wet Dark lighted roadway Rain 1 1 Dec 28 Wednesday 6:25 PM Not Reported 3 Rear end V1: Turning right / V2:Travelling straight ahead / V3:Slowing or stopped in traffic V1:Not reported / / V3:Not reported motor vehicle in traffic / V2: Collision with motor vehicle in traffic / V3: V2:Passenger car / V3:Passenger car Dry Daylight Clear 1 17 Dec 28 Wednesday 5:15 AM damage only (none injured) 2 Angle ahead / V1:Northbound / V1: Not reported / V2: Not reported V2:Light truck(van, minivan, panel, pickup, sport utility) with only four tires Snow Dark lighted roadway Snow 64 MIDDLESEX TURNPIKE 27 Dec 28 Saturday 6:45 PM Non fatal injury 2 3 Not reported Crash Year 29 ahead / V2:Turning left V1:Not reported / motor vehicle in traffic / V2: Collision with motor vehicle in traffic V2:Passenger car Not reported Not reported Not Reported 7 Jan 29 Wednesday 9:13 PM damage only (none injured) 1 Single Vehicle Crash Unknown V1: Not Reported utility pole Unknown Unknown Unknown Unknown 14 Feb 29 Saturday 2:3 PM Non Fatal Injury 2 1 Sideswipe, opposite direction V1: Turning left / V2: Travelling straight ahead V1: Northbound / V2: Southbound motor vehicle in traffic / V2: Collision with motor vehicle in traffic V2:Passenger car (Police Cruiser) Dry Daylight Clear 3 Mar 29 Tuesday 12:5 PM damage only (none injured) 2 Angle V1: Turning left / V2: Travelling straight ahead V1: Westbound / V2: Southbound motor vehicle in traffic / V2: Collision with motor vehicle in traffic V2:Passenger car Wet Daylight Clear 29 Apr 29 Wednesday 9:2 PM damage only (none injured) 2 Unknown Unknown V2: Not Reported Unknown Unknown Unknown 2 Jul 29 Thursday 12: PM Not Reported 2 Angle ahead / V2:Turning left V1:Not reported / motor vehicle in traffic / V2: Collision with motor vehicle in traffic V2:Passenger car Wet Daylight Rain/Cloudy Master Crash List Middlesex Turnpike RSA.xlsx Sheet 1 of 3

31 Jul 29 Friday 5:45 PM 29 Aug 29 Saturday 8:16 AM damage only (none injured) 2 Unknown Unknown damage only (none injured) 2 Unknown ahead / V2: Travelling straight ahead V1: Northbound / V2: Northbound V2: Not Reported Unknown Unknown Unknown V1: Light Truck / V2: Single Unit Truck Wet Daylight Rain 29 Sep 29 Tuesday 2:36 PM damage only (none injured) 2 Angle ahead / V2: Entering Travel Lane V1: Southbound / V2: Southbound motor vehicle in traffic / V2: Collision with motor vehicle in traffic V2:Passenger car Dry Daylight Clear 14 Oct 29 Wednesday 9:54 AM damage only (none injured) 2 Rear end V1: Slowing stopped in traffic / V2: Travelling straight ahead V1: Westbound / V2: Westbound motor vehicle in traffic / V2: Collision with motor vehicle in traffic V2:Passenger car Dry Daylight Cloudy 28 Oct 29 Wednesday 6:35 PM damage only (none injured) 2 Unknown Unknown V2: Not Reported Unknown Unknown Unknown 25 Nov 29 Wednesday 8:11 PM Non fatal injury 2 1 Rear end ahead / V2:Travelling straight ahead V1:Southbound / V2:Southbound motor vehicle in traffic / V2: Collision with motor vehicle in traffic V2:Passenger car Wet Dark lighted roadway Cloudy/Rain DUNKIN DONUTS 28 Nov 29 Saturday 5:17 PM damage only (none injured) 2 Angle ahead / V2: Turning Left V1: Northbound / V2: Westbound motor vehicle in traffic / V2: Collision with motor vehicle in traffic V2:Passenger car Dry Dark lighted roadway Clear 6 Dec 29 Sunday 4:42 PM Crash Year 21 damage only (none injured) 2 Angle ahead / V2:Turning left V1:Northbound / V2:Eastbound motor vehicle in traffic / V2: Collision with motor vehicle in traffic V2:Passenger car Dry Dark lighted roadway Clear 64 MIDDLESEX TURNPIKE 11 Apr 21 Sunday 3:23 PM damage only (none injured) 3 Angle V1: Changing lanes / V2:Travelling straight ahead / V3:Travelling straight ahead V1:Southbound / V2:Southbound / V3:Southbound motor vehicle in traffic / V2: Collision with motor vehicle in traffic / V3: V2:Passenger car / V3:Not reported Dry Daylight Clear 8 May 21 Saturday 2:37 PM damage only (none injured) 2 Rear end ahead / V2:Travelling straight ahead V1:Northbound / V2:Northbound motor vehicle in traffic / V2: Collision with motor vehicle in traffic V2:Passenger car Wet Daylight Rain 69 MIDDLESEX TURNPIKE 27 May 21 Thursday 1:55 AM damage only (none injured) 2 Sideswipe, same direction V1: Entering traffic lane / V2:Changing lanes V1:Southbound / V2:Southbound motor vehicle in traffic / V2: Collision with motor vehicle in traffic V2:Not reported Dry Daylight Clear 27 May 21 Thursday 6:46 PM damage only (none injured) 2 Unknown Unknown V2: Not Reported Unknown Unknown Unknown 15 Jun 21 Tuesday 5:12 PM damage only (none injured) 2 Unknown Unknown V2: Not Reported Unknown Unknown Unknown 4 Aug 21 Wednesday 7:32 PM damage only (none injured) 2 Angle V1: Turning left / V2:Travelling straight ahead V1:Not reported / motor vehicle in traffic / V2: Collision with motor vehicle in traffic V1: Light truck(van, minivan, panel, pickup, sport utility) with only four tires / V2:Passenger car Dry Dusk Clear 64 MIDDLESEX TURNPIKE 7 Oct 21 Thursday 6:28 PM damage only (none injured) 2 Angle V1: Turning right / V2:Turning right V1:Westbound / V2:Northbound motor vehicle in traffic / V2: Collision with motor vehicle in traffic V2:Tractor/semi trailer Dry Dark lighted roadway Clear 1 Oct 21 Sunday 2:24 PM damage only (none injured) 2 Angle ahead / V2:Turning left V1:Northbound / V2:Eastbound motor vehicle in traffic / V2: Collision with motor vehicle in traffic V2:Light truck(van, minivan, panel, pickup, sport utility) with only four tires Dry Daylight Clear Master Crash List Middlesex Turnpike RSA.xlsx Sheet 2 of 3

19 Oct 21 Tuesday 4:2 PM damage only (none injured) 1 Single vehicle ahead V1: Southbound V1: Utility pole V1: Tractor/semi trailer Dry Daylight Cloudy 26 Oct 21 Tuesday 2:5 PM damage only (none injured) 2 Rear end V1: Slowing or stopped in traffic / V2:Travelling straight ahead V1:Northbound / V2:Northbound V1: Not reported / V2: Not reported V1: Not reported / V2:Not reported Dry Daylight Clear 2 Dec 21 Monday 7:32 PM damage only (none injured) 2 Angle ahead / V2:Turning left V1:Northbound / V2:Westbound motor vehicle in traffic / V2: Collision with motor vehicle in traffic V2:Passenger car Snow Dark lighted roadway Snow/Blowing sand, snow 31 Dec 21 Friday 4:5 PM Crash Year 211 damage only (none injured) 2 Sideswipe, same direction 12 Apr 211 Tuesday 11:8 AM Unknown 2 Not reported V1: Changing lanes / V2:Travelling straight ahead V1: Not reported / V1:Northbound / V2:Northbound V1: Not reported / motor vehicle in traffic / V2: Collision with motor vehicle in traffic V1: Not reported / V2:Passenger car Dry V2:Passenger car Unknown Unknown Unknown Dark roadway not lighted Clear 69 MIDDLESEX TURNPIKE 12 Apr 211 Tuesday 9:11 AM damage only (none injured) 2 Unknown Unknown V2:Passenger car Unknown Unknown Unknown 27 Apr 211 Wednesday 1:25 PM damage only (none injured) 1 Single vehicle crash V1: Slowing or stopped V1: Southbound V1: Other / noncollision V1: Motorcycle Sand, mud, dirt, oil, gravel Daylight Clear 28 Apr 211 Thursday 5:39 PM damage only (none injured) 2 Sidewsipe, same direction V1: Turning right / V2: Turning right V1: Southbound / V2: Southbound motor vehicle in traffic / V2: Collision with motor vehicle in traffic V2:Passenger car Dry Daylight Clear 7 Jun 211 Tuesday 5:24 PM damage only (none injured) 2 Unknown Unknown V2: Not Reported Unknown Unknown Unknown 12 Jul 211 Tuesday 5:42 PM damage only (none injured) 2 Angle ahead / V2: Turning left V1: Southbound / V2: Northbound motor vehicle in traffic / V2: Collision with motor vehicle in traffic V2:Passenger car Dry Daylight Clear 12 Aug 211 Friday 5:22 PM damage only (none injured) 2 Rear end (backing) ahead / V2: Travelling straight ahead V1: Northbound / V2: Northbound motor vehicle in traffic / V2: Collision with motor vehicle in traffic V2:Passenger car Unknown Unknown Unknown 3 Sep 211 Friday 8:55 PM damage only (none injured) 1 Single vehicle crash Unknown V1: Passenger car Unknown Unknown Unknown 14 Oct 211 Friday 8:2 PM Unknown 2 Unknown Unknown Unknown V2:Passenger car Unknown Unknown Unknown 6 Nov 211 Sunday 3:5 PM damage only (none injured) 2 Unknown Unknown V2:Passenger car Unknown Unknown Unknown 7 Nov 211 Monday 4:19 PM Non Fatal Injury 2 Unknown Unknown Unknown V2:Passenger car Unknown Unknown Unknown Master Crash List Middlesex Turnpike RSA.xlsx Sheet 3 of 3

Middlesex Tumpike - Burlington, Massachusetts Road Safety Audit LOCATION: Middlesex Turnpike @ Wheeler Road {East) CITY/STATE: Burlington, Massachsuetts TIME PERIOD: 28-211 PREPARED BY: TEC, Inc./ Samuel W. Gregorio, E.I.T./ Daniel A. Shea, E.I.T. SOURCE: Burlington Police Dept, MassDOT.., :EDO<t 4, '9, g,54 1 DRY, DAY, CLD I"YE Mar 3. '!1. 12,511.,._ WET, DAY, CUI SAT Nov28 '!1 17:17 DRY, DRK.C.R THU Od: 7 1 1 18:28 DRY, DRK.W SUN Dec 6 '!1 16'42 DRY, DRK,CUI LEGEND VEHICLE PATH HEAD-ON COWSION - ----... BACKING VEHICLE \._ ANGLED COWSION ---- SIDESWIPE COLLISION ----.p PEDESTRIAN COUISION REAR-END COLLISION REAR-END PROPERTY DAMAGE ONLY 4 NON-FATAL INJURY 2 UNKNOWN /NOT REPORTED TOTAL 6.., --v-+ --/'v-+ FIXED OBJECT COLLISION OVERTURNED VEHICLE OUT-OF-CONTROL VEHICLE D FIXED OBJECT MOVEABLE OBJECT = PARKED VEHICLE PERSONAL INJURY FATALITY E EJECTION SUMMARY OF CRASHES ON DIAGRAM [no fatal collisions] SIDESWIPE 3 3 HEAD-ON ANGLED 1 1 11 SINGLE VEH 2 2 SHOW FOR COLLISION 1. Approximate location ofcollision, 2. Direction of collision, 3. Type of collision and vehicles Involved, 4. Time, Day, Date 5. Any other pertinent factors mentioned on the report. UNK TOTAL 19 3 Collision Diagram 28-211 Collision Data

Middlesex Turnpike @ Wheeler Road (East) Month % January 2% February 4% March 2% April 13% May 9% June 7% July 11% August 7% September 4% October 17% November 9% December 15% 2% 18% 16% 14% 12% 1% 8% 6% 4% 2% % Day of Week Sunday 11% Monday 9% Tuesday 22% Wednesday 24% Thursday 11% Friday 11% Saturday 13% 3% 2% 1% % Time of Day 6AM 9AM 13% 9AM 3PM 28% 3PM 6PM 28% 6PM 6AM 3% 4% 2% % 6AM 9AM 9AM 3PM 3PM 6PM 6PM 6AM Manner of Collision Single Vehicle Crash 9% Rear end 15% Angled 35% Sideswipe, same direction 9% Sideswipe, opp direction 2% Head on % Rear to Rear % Unknown / Not Reported 3% 4% 3% 2% 1% % 1 2 3 4 5 6 7 8 Weather Conditions Clear 46% Cloudy 4% Rain 11% Snow 2% Sleet, Hail, Freezing Rain % Fog, Smog, Smoke % Crosswinds % Blowing Sand, snow, dust 2% Other % Unknown / Not Reported 35% 5% 4% 3% 2% 1% % 1 2 3 4 5 6 7 8 9 1 Road Surface Dry 46% Wet 13% Snow 4% Ice % Sand, Mud, Dirt, Oil, Gravel 2% Water % Slush % Other % Unknown / Not Reported 35% 5 % 4% 3% 2% 1% % 1 2 3 4 5 6 7 8 9

Crash Date Day of Week Crash Year 28 Crash Time Crash Severity Number of Vehicles Total Nonfatal Injuries Total Fatal Injuries Manner of Collision 17 Mar 28 Monday 8:15 AM Not Reported 2 Rear end 3 Apr 28 Wednesday : AM Non fatal injury 1 1 Head on Massachusetts Department of Transportation Crash Report for Middlesex Turnpike at I 95 NB Ramps and Wheeler Road West Vehicle Action Prior to Crash V1: Slowing or stopped in traffic / Vehicle Travel Directions Most Harmful Events Vehicle Configuration V1:Northbound / ahead V1:Southbound V1: Not reported pedestrian V1: Passenger car Dry Road Surface Condition Ambient Light Weather Condition At Roadway Intersection Dry Daylight Clear MIDDLESEX TURNPIKE Distance from Nearest Roadway Intersection Non Motorist Type Dark lighted roadway Clear 84 MIDDLESEX TURNPIKE P2:Pedestrian 23 May 28 Friday 3:3 PM Not Reported 3 Rear end 19 Jun 28 Thursday 6: PM 15 Sep 28 Monday 12: PM 15 Dec 28 Monday 3:55 PM (none injured) 2 Rear end Non fatal injury 2 2 Rear end (none injured) 2 Rear end ahead / V2:Travelling straight ahead / V3:Travelling straight ahead V1: Slowing or stopped in traffic / V2:Slowing or stopped in traffic V1: Slowing or stopped in traffic / V2:Travelling straight ahead V1: Turning right / V2:Slowing or stopped in traffic V1:Northbound / V2:Northbound / V3:Northbound V1:Not reported / V1:Not reported / V1:Northbound / V2:Northbound V1: / V3: V1: V1: V1: V1: Not reported / / V3:Not reported Dry Daylight Clear V2:Passenger car Dry Daylight Clear Rte 95 / Rte 95 / RAMP MIDDLESEX TURNPIKE TO RT 95 NB V2:Passenger car Dry Daylight Clear 84 MIDDLESEX TURNPIKE V2:Light truck(van, mini van, panel, pickup, sport utility) with only four tires Dry Daylight Clear RAMP RT 95 NB TO MIDDLESEX TURNPIKE / MIDDLESEX TURNPIKE 27 Dec 28 Saturday 1:3 PM Crash Year 29 (none injured) 2 Sideswipe, same direction V1: Slowing or stopped in traffic / V1:Northbound / V1: Not reported / V2: Not reported V1: Not reported / Wet Daylight Rain MIDDLESEX TURNPIKE Rte 95 / Rte 95 19 Jan 29 Monday 8:4 AM (none injured) 1 Single vehicle crash ahead V1:Northbound V1: Not reported V1: Passenger car Ice Daylight Cloudy LOWELL STREET / MIDDLESEX TURNPIKE / RAMP MIDDLESEX TURNPIKE TO RT 95 NB 13 Sep 29 Sunday 1: PM Unknown 2 8 Nov 29 Sunday 11:47 AM Single vehicle crash (none injured) 2 Rear end 14 Nov 29 Saturday 3: PM Unknown 2 Not Reported Crash Year 21 19 Jan 21 Tuesday 6:22 PM 7 Feb 21 Sunday 5:35 PM 9 Feb 21 Tuesday 8:24 AM 6 Mar 21 Saturday 3:53 PM 2 Mar 21 Saturday 6:22 PM (none injured) 3 Angle Non fatal injury 2 1 Rear end (none injured) 2 Not Reported V1: Slowing or stopped in traffic / V2:Travelling straight ahead ahead / V2:Slowing or stopped in traffic V2: Not Reported V1: Travelling Straight Ahead / V2: Parked V1: Slowing or stopped in traffic / V2:Slowing or stopped in traffic V2: Not Reported V1:Northbound / V1:Northbound / V2:Northbound V1: Northbound / V2: Northbound V1: Northbound / V2: Northbound V1: Not reported / V2: Not reported V1: V1: V1: V1: V1: Not reported / Dry Daylight Clear V2:Single unit truck (2 axle, 6 tire) Dry Daylight Clear V2:Passenger car Wet V2:Passenger car Dry Dark lighted roadway Snow Dark lighted roadway Not Reproted V2:Passenger car Unknown Unknown Unkown Non fatal injury Unknown Unkown Not Reported V1: Not Reported V1: Not Reported V1: Not Reported V1: Not Reported Unknown Unknown Unkown (none injured) 2 Rear end ahead / V2:Slowing or stopped in traffic V1:Southbound / V2:Southbound V1: V2:Passenger car Dry Daylight Clear 15 May 21 Saturday 9:31 PM Unknown Unknown Unkown Not Reported V1: Not Reported V1: Not Reported V1: Not Reported V1: Not Reported Unknown Unknown Unkown 27 May 21 Thursday 7: PM 4 Jun 21 Friday 11:41 AM 8 Jun 21 Tuesday 2:34 PM (none injured) 2 Rear end (none injured) 2 Rear end Non fatal injury 2 Unkown Rear end V1: Slowing or stopped in traffic / V2:Slowing or stopped in traffic V1: Slowing or stopped in traffic / V2:Slowing or stopped in traffic V1: Slowing or stopped in traffic / V2:Slowing or stopped in traffic V1: V1: V1: V1: Motorcycle / V2:Passenger car Unknown Unknown Unkown V2:Passenger car Unknown Unknown Unkown V2: Not Reported Unknown Unknown Unkown / Rte 95 N / Rte 95 N MIDDLESEX TURNPIKE Rte 95 / RAMP RT 95 NB TO MIDDLESEX TURNPIKE 5 feet S from Intersection RAMP MIDDLESEX TURNPIKE TO RT 95 SB / Rte 95 N / Rte 95 N / Rte 95 N / Rte 95 N / Rte 95 N / Rte 95 N 66 MIDDLESEX TPKE/MIDAS MUFFLER 69 MIDDLESEX TURNPIKE Master Crash List Middlesex Turnpike RSA.xlsx Sheet 1 of 2

1 Jul 21 Thursday 7:41 PM Non fatal injury 3 4 Rear end ahead / V2: Slowing or stopped in traffic V1:Southbound / V2:Southbound V1: V2:Passenger car Dry Daylight Clear 5 Aug 21 Thursday 3:22 PM 5 Aug 21 Thursday 3:37 PM 7 Aug 21 Saturday 7:15 PM (none injured) Unknown Not Reported V1: Not Reported V1: Not Reported V1: Not Reported V1: Not Reported Unknown Unknown Unkown Non fatal injury 4 1 Rear end (none injured) 2 Angle V1: Slowing or stopped in traffic / V2:Slowing or stopped in traffic / V3:Travelling straight ahead / V4:Travelling straight ahead ahead / V2: Turning Left V1:Northbound / V2:Northbound / V3:Northbound / V4:Northbound V1: Southbound / V2: Northbound V1: / V3: / V4: V1: V2:Passenger car / V3:Light truck(van, mini van, panel, pickup, sport utility) with only four tires / V4:Passenger car Dry Daylight Clear V2:Passenger car Dry Daylight Clear 21 Sep 21 Tuesday 9:6 PM 1 Oct 21 Sunday 2:24 PM (none injured) Unknown Not Reported V1: Not Reported V1: Not Reported V1: Not Reported V1: Not Reported Unknown Unknown Unkown (none injured) 2 Angle ahead / V2: Turning Left V1: Southbound / V2: Northbound V1: V2:Passenger car Unknown Unknown Unkown 21 Oct 21 Thursday 1:16 PM 26 Oct 21 Tuesday 2:5 PM (none injured) 2 Not Reported V1: Not Reported V1: Not Reported V1: Not Reported V1: Not Reported Unknown Unknown Unkown (none injured) 2 Rear end V1: Slowing or stopped in traffic / V2: Travelling straight ahead V1:Northbound / V2:Northbound V1: V1: Light Truck / V2: Passenger Car Dry Daylight Clear 11 Nov 21 Thursday 3:17 PM (none injured) Unknown Not Reported V1: Not Reported V1: Not Reported V1: Not Reported V1: Not Reported Unknown Unknown Unkown 23 Nov 21 Tuesday 6:5 PM (none injured) 2 Not Reported V1: Not Reported V1: Not Reported V1: Not Reported V1: Not Reported Unknown Unknown Unkown 26 Nov 21 Friday 5:43 AM 18 Dec 21 Saturday 5:29 PM Crash Year 211 (none injured) 2 Not Reported (none injured) 2 Rear end V2: Not Reported V1: Slowing or stopped in traffic / V2:Travelling straight ahead V1:Southbound / V2:Southbound V1: Not reported / V2: Not reported V1: V2:Passenger car Unknown Unknown Unkown V2:Passenger car Dry Dark lighted roadway Clear 5 Jan 11 Wednesday 9:8 AM (none injured) Unknown Not Reported V1: Not Reported V1: Not Reported V1: Not Reported V1: Not Reported Unknown Unknown Unkown 28 Jan 11 Friday 8:47 AM 31 Jan 11 Monday 6: PM (none injured) Unknown Not Reported V1: Not Reported V1: Not Reported V1: Not Reported V1: Not Reported Unknown Unknown Unkown (none injured) 2 Rear end ahead / V2: Travelling straight ahead V1:Northbound / V2:Northbound V1: V2:Passenger car Dry Dark lighted roadway Clear 3 Feb 11 Thursday 9:11 PM (none injured) 2 Not Reported 26 Feb 11 Saturday 2:27 PM Unknown 3 Unknown Not Reported 11 Nov 11 Friday 8:22 PM 3 Nov 11 Wednesday 1:29 PM (none injured) 2 Non fatal injury 3 1 Angle Sideswipe, opposite direction V2: Not Reported V2: Not Reported / V3: Not Reported ahead / V2: Turning Left ahead / V2: Turning Left / V3: Not Reported V1: Southbound / V2: Westbound V1: Southbound / V2: Northbound V1: Not reported / V2: Not reported V1: Not reported / V2: Not reported / V3: Not reported V1: V1: V2:Passenger car Unknown Unknown Unkown V2:Passenger car / V3: Not Reported Unknown Unknown Unkown V2:Passenger car Dry Dark lighted roadway Clear V2:Passenger car Dry Daylight Clear Master Crash List Middlesex Turnpike RSA.xlsx Sheet 2 of 2 / Rte 95 N / Rte 95 N / Rte 95 N / Rte 95 N / Rte 95 N / Rte 95 N / Rte 95 N / Rte 95 N RAMP RT 95 NB TO MIDDLESEX TURNPIKE / Rte 95 N / Rte 95 N / Rte 95 N / Rte 95 N / Rte 95 N 5 feet S from Intersection Rte 128 / Rte 95 N / Rte 95 N / Rte 95 N / Rte 95 N

Middlesex Tumpike - Burlington, Massachusetts Road Safety Audit LOCATION: CITY/STATE: TIME PERIOD: PREPARED BY: SOURCE: Middlesex Turnpike @ Interstate 95 (North) Burlington, Massachsuetts 28-211 TEC, Inc./ Samuel W. Gregorio, E.I.T./ Daniel A. Shea, E.I.T. Burlington Police Dept, MassDOT I I I - v ---- LEGEND VEHICLE PATH HEAD-ON COWSION - -----... BACKING VEHICLE \..._ ANGLED COWSION ----- SIDESWIPE COLLISION -----..p PEDESTRIAN COUISION REAR-END COLLISION REAR-END PROPERTY DAMAGE ONLY 9 NON-FATAL INJURY 2 UNKNOWN /NOT REPORTED TOTAL 11..., --v-+ --/'v-+ FIXED OBJECT COLLISION OVERTURNED VEHICLE OUT-OF-CONTROL VEHICLE D = E FIXED OBJECT MOVEABLE OBJECT PARKED VEHICLE PERSONAL INJURY FATALITY EJECTION SUMMARY OF CRASHES ON DIAGRAM [no fatal collisions] SIDESWIPE 2 2 HEAD-ON ANGLED 2 1 3 SINGLE VEH 1 1 1 SHOW FOR COLLISION 1. Approximate location ofcollision, 2. Direction of collision, 3. Type of collision and vehicles Involved, 4. Time, Day, Date 5. Any other pertinent factors mentioned on the report. UNK TOTAL 14 4 Collision Diagram 28-211 Collision Data

Middlesex Turnpike @ I 95 Northbound Ramps / Wheeler Road Month % January 13% February 1% March 8% April 3% May 8% June 8% July 3% August 8% September 8% October 8% November 18% December 8% 2% 18% 16% 14% 12% 1% 8% 6% 4% 2% % Day of Week Sunday 1% Monday 13% Tuesday 15% Wednesday 8% Thursday 21% Friday 13% Saturday 21% 25% 2% 15% 1% 5% % Time of Day 6AM 9AM 1% 9AM 3PM 31% 3PM 6PM 23% 6PM 6AM 36% 4% 2% % 6AM 9AM 9AM 3PM 3PM 6PM 6PM 6AM Manner of Collision Single Vehicle Crash 5% Rear end 41% Angled 1% Sideswipe, same direction 3% Sideswipe, opp direction 3% Head on 3% Rear to Rear % Unknown / Not Reported 36% 5% 4% 3% 2% 1% % 1 2 3 4 5 6 7 8 Weather Conditions Clear 44% Cloudy 3% Rain 3% Snow 3% Sleet, Hail, Freezing Rain % Fog, Smog, Smoke % Crosswinds % Blowing Sand, snow, dust % Other % Unknown / Not Reported 46% 5% 4% 3% 2% 1% % 1 2 3 4 5 6 7 8 9 1 Road Surface Dry 46% Wet 5% Snow % Ice 3% Sand, Mud, Dirt, Oil, Gravel % Water % Slush % Other % Unknown / Not Reported 44% 5% 4% 3% 2% 1% % 1 2 3 4 5 6 7 8 9

Crash Date Day of Week Crash Year 28 Crash Time Crash Severity Number of Vehicles Total Nonfatal Injuries Total Fatal Injuries Manner of Collision Vehicle Action Prior to Crash Massachusetts Department of Transportation Crash Report for Middlesex Turnpike at I 95 SB Ramps Vehicle Travel Directions Most Harmful Events Vehicle Configuration Road Surface Condition Ambient Light Weather Condition At Roadway Intersection Distance from Nearest Roadway Intersection Non Motorist Type 3 Jan 28 Wednesday 6:39 PM 1 Feb 28 Sunday 6:15 AM (none injured) 2 Rear end (none injured) 2 Rear end 3 Jun 28 Monday 4:3 PM Not Reported 2 Not reported ahead / V2:Travelling straight ahead ahead / V2:Travelling straight ahead V1: Slowing or stopped in traffic / V2:Slowing or stopped in traffic V1:Not reported / V1:Southbound / V2:Southbound V1:Not reported / V1: V1: Not reported / V2: Not reported V1: V2:Passenger car Dry V1: Light truck(van, mini van, panel, pickup, sport utility) with only four tires / V2:Passenger car Wet Dark lighted roadway Clear 9 MIDDLESEX TURNPIKE Dark lighted roadway Snow 96 MIDDLESEX TURNPIKE V2:Light truck(van, minivan, panel, pickup, sport utility) with only four tires Not reported Not reported Not Reported 75 MIDDLESEX TURNPIKE 14 Aug 28 Thursday 1:3 AM (none injured) 2 Rear end 29 Aug 28 Friday 1:15 PM Not Reported 2 Angle Crash Year 29 ahead / V2:Travelling straight ahead ahead / V2:Entering traffic lane V1:Northbound / V2:Northbound V1:Not reported / V1: Not reported / V2: Not reported V1: V2:Passenger car Dry Daylight Clear 98 MIDDLESEX TURNPIKE V1: Light truck(van, mini van, panel, pickup, sport utility) with only four tires / V2:Light truck(van, mini van, panel, pickup, sport utility) with only four tires Dry Daylight Clear 75 MIDDLESEX TURNPIKE 29 Jul 29 Wednesday 5:25 PM (none injured) 2 Angle ahead / V2:Turning left V1:Not reported / V1: V2:Passenger car Wet Daylight Rain 75 MIDDLESEX TURNPIKE 11 Aug 29 Tuesday 1:25 PM 24 Sep 29 Thursday 5:1 PM (none injured) 2 Sideswipe, same direction ahead / V2:Turning right V1:Northbound / V2:Northbound V1: V2:Tractor/semi trailer Dry Daylight Clear 75 MIDDLESEX TURNPIKE Non fatal injury Unknown Unknown Not reported V1: Not Reported V1: Not Reported V1: Not Reported V1: Not Reported Unknown Unknown Unknown ROUTE 128 SB 18 Sep 29 Friday 4:41 PM 2 Oct 29 Friday 11:33 AM Non fatal injury 2 2 Angle Non fatal injury 1 1 Not reported V1: Turning left / V2:Travelling straight ahead V1:Northbound / V2:Eastbound V1: Slowing or stopped in traffic V1:Not reported V1: V2:Passenger car Dry Daylight Clear 75 MIDDLESEX TURNPIKE pedestrian V1: Passenger car Dry Daylight Clear 75 MIDDLESEX TURNPIKE P2:Pedestrian 3 Oct 29 Saturday 8:35 PM (none injured) 2 Not reported 8 Oct 29 Thursday 1:5 PM Not Reported 2 Not reported ahead / V2:Entering traffic lane V1: Turning left / V2:Travelling straight ahead V1:Northbound / V2:Northbound V1:Not reported / V1: V1: Not reported Not reported Not Reported 75 MIDDLESEX TURNPIKE V1: Light truck(van, mini van, panel, pickup, sport utility) with only four tires / V2:Passenger car Not reported Not reported Not Reported 75 MIDDLESEX TURNPIKE 28 Oct 29 Wednesday 8:44 PM 4 Nov 29 Wednesday 8:5 AM (none injured) 2 Rear end (none injured) 2 Angle V1: Slowing or stopped in traffic / V2:Slowing or stopped in traffic ahead / V2:Travelling straight ahead V1:Not reported / V1:Westbound / V2:Northbound V1: V1: V1: Not reported / V2:Passenger car Wet V1: Not reported / Dark lighted roadway Rain 75 MIDDLESEX TURNPIKE V2:Light truck(van, minivan, panel, pickup, sport utility) with only four tires Dry Daylight Clear 75 MIDDLESEX TURNPIKE 8 Nov 29 Sunday 11:47 AM (none injured) 2 Rear end ahead / V2: Slowing or stopped V1: Northbound / V2: Northbound V1: V1: Passenger Car / V2: CO Dry Daylight Clear I 95 SB Ramps 2 Dec 29 Wednesday 6:41 PM (none injured) Unknown Not reported V1: Not Reported V1: Not Reported V1: Not Reported V1: Not Reported Unknown Unknown Unknown 11 Dec 29 Friday 5:28 PM Unknown Unknown Not reported V1: Not Reported V1: Not Reported V1: Not Reported V1: Not Reported Unknown Unknown Unknown ROUTE 128 SB ROUTE 128 SB Master Crash List Middlesex Turnpike RSA.xlsx Sheet 1 of 3

21 Dec 29 Monday 9:51 AM (none injured) 2 Rear end V1: Slowing or stopped in traffic / V2:Slowing or stopped in traffic V1:Not reported / V1: V1: Not reported / Snow Daylight Cloudy 75 MIDDLESEX TURNPIKE 23 Dec 29 Wednesday 1:33 PM Crash Year 21 17 Jan 21 Sunday 3:34 PM (none injured) 2 Rear end (none injured) 2 Rear end V1: Slowing or stopped in traffic / V2:Backing V1: Slowing or stopped in traffic / V2:Slowing or stopped in traffic V1:Northbound / V2:Northbound V1:Not reported / V1: V1: V2:Passenger car Dry Daylight Clear 75 MIDDLESEX TURNPIKE CRATE AND BARRELL V1: Light truck(van, mini van, panel, pickup, sport utility) with only four tires / V2:Passenger car Dry Daylight Clear 75 MIDDLESEX TURNPIKE 22 Jan 21 Friday 5:26 PM Unknown Unknown Not reported V1: Not Reported V1: Not Reported V1: Not Reported V1: Not Reported Unknown Unknown Unknown 23 Jan 21 Saturday 3:41 PM (none injured) 2 Angle V1: Slowing or stopped in traffic / V2:Turning right V1:Not reported / V1: Collision with parked motor vehicle ROUTE 128 SB V1: Light truck(van, mini van, panel, pickup, sport utility) with only four tires / V2:Passenger car Dry Daylight Clear 75 MIDDLESEX TURNPIKE 12 Feb 21 Friday 4:47 PM Unknown Unknown Not reported V1: Not Reported V1: Not Reported V1: Not Reported V1: Not Reported Unknown Unknown Unknown 16 Feb 21 Tuesday 5:35 PM (none injured) 2 Angle 2 Feb 21 Saturday 4: PM Not Reported 1 Single vehicle crash V1: Other / V2:Travelling straight ahead V1:Not reported / ahead V1:Not reported V1: V2:Light truck(van, minivan, panel, pickup, sport utility) with only four tires Snow Dusk ROUTE 128 SB Snow/Blowing sand, snow 75 MIDDLESEX TURNPIKE pedestrian V1: Passenger car Dry Daylight Clear 75 MIDDLESEX TURNPIKE P2:Pedestrian 25 Feb 21 Thursday 7:18 AM 14 Apr 21 Wednesday 11:2 AM (none injured) 2 Angle (none injured) 5 Unknown V1: Turning left / V2:Travelling straight ahead V2: Not Reported / V3: Not Reported / V4: Not Reported / V5: Not Reported V1: Eastbound / V2: Southbound / V3: Not Reported / V4: Not Reported / V5: Not Reported V1: V2: Not Reported / V3: Not Reported / V4: Not Reported / V5: Not Reported V2: Unknown Wet Daylight Rain V1: Passenger Car / V2: Not Reported / V3: Not Reported / V4: Passenger Car / V5: Passenger Car Unknown Unknown Unknown I 95 SB Ramps ROUTE 128 SB 6 May 21 Thursday 3:19 PM (none injured) 2 Angle ahead / V2:Entering traffic lane V1:Eastbound / V2:Northbound V1: V2:Passenger car Dry Daylight Cloudy 75 MIDDLESEX TURNPIKE 9 Jun 21 Wednesday 12:26 PM (none injured) 2 Angle V1: Slowing or stopped in traffic / V2:Not reported V1:Northbound / V1: Not reported Dry Daylight Clear 76 MIDDLESEX TURNPIKE 18 Jun 21 Friday 4:5 PM (none injured) 2 Not reported V1: Not Reported V1: Not Reported V1: Not Reported V1: Not Reported Unknown Unknown Unknown ROUTE 128 SB 28 Jun 21 Monday 12:6 PM Not Reported 2 Angle ahead / V2:Turning left V1:Southbound / V2:Eastbound V1: V1: Not reported / Dry Daylight Clear 75 MIDDLESEX TURNPIKE 9 Aug 21 Monday 12:43 PM (none injured) 2 Rear end V1: Turning left / V2:Travelling straight ahead V1: Eastbound / V2: Eastbound V1: V2:Passenger car Dry Daylight Clear I 95 SB Ramps 23 Aug 21 Monday 2:47 PM (none injured) 2 Not reported V1: Not Reported V1: Not Reported V1: Not Reported V1: Not Reported Unknown Unknown Unknown ROUTE 128 SB 24 Aug 21 Tuesday 12:5 PM (none injured) 2 Not reported V1: Not Reported V1: Not Reported V1: Not Reported V2:Passenger car Unknown Unknown Unknown ROUTE 128 SB 25 Aug 21 Wednesday 1:24 PM (none injured) 2 Sideswipe, same direction V1: Changing lanes / V2:Travelling straight ahead V1:Northbound / V2:Northbound V1: 1 Sep 21 Friday 8:38 AM Unknown Unknown Unknown Not reported V1: Not Reported V1: Not Reported V1: Not Reported V2:Passenger car Wet V2:Passenger car Unknown Unknown Unknown Dark lighted roadway Cloudy 75 MIDDLESEX TURNPIKE ROUTE 128 SB 11 Sep 21 Saturday 4:22 PM (none injured) 2 Rear end V1: Slowing or stopped in traffic / V2:Slowing or stopped in traffic V1:Eastbound / V2:Eastbound V1: V2:Passenger car Dry Daylight Clear 75 MIDDLESEX TURNPIKE Master Crash List Middlesex Turnpike RSA.xlsx Sheet 2 of 3

6 Nov 21 Saturday 12:12 PM (none injured) 2 Rear end V2: Not Reported V1: V2:Passenger car Unknown Unknown Unknown 8 Nov 21 Monday 9:47 PM (none injured) 3 Not reported V2: Not Reported / V3: Not Reported / V3: Not Reported V1: / V3: V1: Passenger Car / V2: Passenger Car / V3: Not Reported Unknown Unknown Unknown 9 Nov 21 Tuesday 3:11 PM (none injured) 2 Sideswipe, same direction V1: Making U turn / V2:Turning left V1:Southbound / V2:Southbound V1: V1: Tractor/semi trailer / V2:Truck/trailer Dry Daylight Clear 3 Nov 21 Tuesday 9:49 AM Non fatal injury 2 1 Sideswipe, same direction 3 Dec 21 Thursday 1:47 AM Unknown 2 Not reported Crash Year 211 V1: Turning left / V2:Travelling straight ahead V2: Not Reported V1: Eastbound / V2: Eastbound V1: V2: Not Reported V1: Passenger Car / V2: Pick up Truck Dry Daylight Clear V2: Not Reported Unknown Unknown Unknown 18 Jan 211 Tuesday 8:26 AM Unknown Unknown Unknown Not reported V1: Not Reported V1: Not Reported V1: Not Reported V1: Passenger car Unknown Unknown Unknown 18 Feb 211 Friday 6:27 AM (none injured) 2 Rear end V1: Stopped or slowing / V2: Entering Traffic lane V1:Southbound / V2:Southbound V1: V2:Passenger car Wet Daylight Clear 23 Feb 211 Wednesday 3:54 PM (none injured) 1 Single vehicle crash V1: Not Reported V1: Not Reported V1: Not Reported V1: Passenger car Unknown Unknown Unknown Master Crash List Middlesex Turnpike RSA.xlsx Sheet 3 of 3 I 95 SB Ramps I 95 SB Ramps I 95 SB Ramps ROUTE 128 SB 75 Rte 3 ROUTE 128 SB ROUTE 128 SB ROUTE 128 SB

Middlesex Tumpike - Burlington, Massachusetts Road Safety Audit LOCATION: CITY/STATE: TIME PERIOD: PREPARED BY: SOURCE: Middlesex Turnpike @ Interstate 95 (South) Burlington, Massachsuetts 28-211 TEC, Inc./ Samuel W. Gregorio, E.I.T./ Daniel A Shea, E.I.T. Burlington Police Dept, MassDOT ED Nov D4, '9, D8:5 DRY, DAY, O.R v -- VEHICLE PATH -... BACKING VEHICLE SIDESWIPE COLLISION -----..p PEDESTRIAN COUISION REAR-END COLLISION --- REAR-END PROPERTY DAMAGE ONLY 7 NON-FATAL INJURY UNKNOWN /NOT REPORTED TOTAL 7 ---- \...., --v-+ --/'v-+ HEAD-ON COWSION ANGLED COWSION FIXED OWECT COLLISION OVERTURNED VEHICLE OUT-OF-CONTROL VEHICLE = E MOVEABLE OWECT PARKED VEHICLE PERSONAL INJURY FATALITY EJECTION SUMMARY OF CRASHES ON DIAGRAM [no fatal collisions] SIDESWIPE HEAD-ON ANGLED SINGLE VEH 4 4 4 4 SHOW FOR COLLISION 1. Approximate location ofcollision, 2. Direction of collision, 3. Type of collision and vehicles Involved, 4. Time, Day, Date 5. Any other pertinent factors mentioned on the report. TOTAL 15 Collision Diagram 28-211 Collision Data

Middlesex Turnpike @ I 95 Southbound Ramps Month % January 11% February 16% March % April 2% May 2% June 9% July 2% August 16% September 9% October 9% November 13% December 11% 18% 16% 14% 12% 1% 8% 6% 4% 2% % Day of Week Sunday 7% Monday 13% Tuesday 13% Wednesday 22% Thursday 13% Friday 2% Saturday 11% 25% 2% 15% 1% 5% % Time of Day 6AM 9AM 13% 9AM 3PM 36% 3PM 6PM 38% 6PM 6AM 13% 4% 2% % 6AM 9AM 9AM 3PM 3PM 6PM 6PM 6AM Manner of Collision Single Vehicle Crash 4% Rear end 27% Angled 22% Sideswipe, same direction 9% Sideswipe, opp direction % Head on % Rear to Rear % Unknown / Not Reported 38% 4% 3% 2% 1% % 1 2 3 4 5 6 7 8 Weather Conditions Clear 42% Cloudy 7% Rain 7% Snow 2% Sleet, Hail, Freezing Rain % Fog, Smog, Smoke % Crosswinds % Blowing Sand, snow, dust 2% Other % Unknown / Not Reported 4% 45% 4% 35% 3% 25% 2% 15% 1% 5% % 1 2 3 4 5 6 7 8 9 1 Road Surface Dry 42% Wet 13% Snow 4% Ice % Sand, Mud, Dirt, Oil, Gravel % Water % Slush % Other % Unknown / Not Reported 4% 5% 4% 3% 2% 1% % 1 2 3 4 5 6 7 8 9

Road Safety Audit Middlesex Turnpike between Wheeler Road (East) and I-95 Southbound Ramps Appendix D. Speed Regulation Data Additional appendices should be provided for any additional information about the site that is not provided in the report.

Road Safety Audit Middlesex Turnpike between Wheeler Road (East) and I-95 Southbound Ramps Appendix E. Traffic Volume Data Additional appendices should be provided for any additional information about the site that is not provided in the report.

- - 24 ----- Location : Middlesex Turnpike Location : Between Route 95 Ramps City/State: Burlington, MA Counter : 13735 Accurate Counts 978-664-2565 Page 1 11531 Site Code: 11531 Start 12-Sep-11 Tue Wed Thu Fri Sat Sun Week Average Time NB SB NB SB NB SB NB SB NB SB NB SB NB SB NB SB 12:AM * * * * * - * 54-1: * * *. * * -- - * -- 2: - 33 86 57 99 15 181 * * 72 122-62 - 51 - ' 99 * < 57 * --- '---- 36 -- * * * * * * 2-73. - - 3: * * --- n - * * * -- "' - 4: -- 15-19 17 23 32 4 * * * * -- * * * ---.- * - - 2 19 -- - 31 ----,,.-_--..--.: 23. 27 22. 18 24 --- - - 5: * *IL._-. ; - 41-34 =- _1 - - 37 38 32 * 173-19 * * - 37 3-135 ' 17-15_Q" 2 6: - - 72 *' * 133 119 - * *...--------.-- * * * * 474 481 497 171!. 7: r * * --.., r *. I" 177 - - 168 * * - : _9]4. 2_ro - 39 * * 8: * * * * * * ' 1467 ----.--. 452-366 382 1Q4Z. 99_ 769 777 --.---,... - 1141' 1436 977 472 448 * * 1122-855 * *.. -...,... < 9: * 1361-871 - 139-831 861-589 * * - -- 1177-764,_ 1: _.. * * * * * * 1275 856 1329 14 1325 865 * * 131 98 -..-------- --.,. r 11: *....._.. * "---- * * 1372 1136 1633 132 1461 1261 * * 1452 1239 12: PM * * * * * * 1585 1488 175 1531 1676 139 * * 1655 147 1:.---..---- -- - - - * * * * * 14_()4-1385 1612 1589 171 1 1494' * * 1572 1489 ---- 2: * * * * * * 1387 1341 1 14 J - f&oa 1643 1. 1617 * * 1515 r=-1&22.-.----.- - 3: * ' * * 138 1284 1547 136 1612. - 1583 ----- * * 1513 ' -- 141 --- - - 4: ------ * * * * 1511 1345 1591. - 1381-1579 1547 * * 156 1424 5: * * *! I * 1655 1512 1723-154 16 15 * * 1szal' : 1517 --- - 6: * * * * * 147 1356 1692 1346 1519 1452 ------ * * 156 1385. I: - 7: *' * * *. 11 1155 -- 1395 124 1246 1288 * * -- 1249 =1228 8: -- * J --- * * * 711 985 851 187 852 189 * 85 154..._ -,.------..-.-.. * * ---... -- - 9: - - -- * * - * 436 775" 497 * :- -- 33 - - -- -- - -- 44_3' - 899 * - l 459 ---... 869 - - 1: * - * * * * * 251 43 28 631 28 618 - * -- * 27 56 11: - * * * * * * 13 164 173 265 158 282 * * 154 237 Lane 2378 1915 21928 258 1926 18841 255 19485 Day 39483 42436 3847 3999 AM Peak 8: 8: 11: 11: 11: 11: 11: 11: Vol. 1457 1141 1533 132 1451 1261 1452 1239 PM Peak 17: 17: 17: 14: 13: 14: 17: 14: Vol. 1655 1512 1723 168 171 1617 1678 1522 Comb. Total 39483 42436 3847 3999 ADT ADT4,242 AADT4,242

Accurate Counts Page 1 978-664-2565 11531 Location : Middlesex Turnpike Location : Between Route 95 Ramps Site Code: 11531 City/State: Burlington, MA Counter : 13735 Start Time 12: 12:15 12:3 12:45 1: 1 :15, 1:3 1:45 2: 2:15 2:3 2:45 3: 3:15 3:3 3:45 4: 4:15 4:3 4:45 5: 5:15 5:3.5:45 6: 6:15 6:3 _&:45 7: 7:15 7:3= ---.,.-- 7:45 8: 8:15 8:3 8:45 9: 9:15 9:3 9:45 1: 1:15 1:3 1:45 11: 11:15 11:3 11:45 Total Percent 1372 SB Hour Totals Combined Totals Momin Afternoon Momin Afternoon 373 2189 2261 1696 2232 1211 681 258 294 13237 26246 33.5% 66.5%

Accurate Counts Location : Middlesex Turnpike 978-664-2565 11531 Location : Between Route 95 Ramps Site Code: 11531 City/State: Burlington, MA Counter : 13735 Page2 Start 16-Sep-11 Hour Totals Hour Totals Combined Totals Time Fri Mornin Mornin Afternoon Mornin Afternoon Mornin Afternoon 12: 16 12:15 1 12:3 15 12:45 16 1: 4 Ot _t5 9 1:3 5 1:45 6 2: 7 2:15 5 2:3 3 2:45 2 3122 3: 1 Q3:_15 8 3:3 3:45 1 4: 8 4:15 4 4:3 4 4:45 21 5: 13 5:15 28 5:3 56 5:45 78 3263 6: 79 6:15 14 6:3 111 6:45 158 7: 176 7:15 23 7:3 269 7:45 312 2635 8: 351 8:15 338 8:3 37 8:45 377 1938 9: 322 9:15 321 9:3 318 9:45 348 143. 1: 336 1:15 316 1:3 34 19:45 337 11: 355 11:15 3J)8 11:3 36 11:45 46 1533 132 265 2853 438 Total 7348 13343 2993 Percent 33.5% 31.4% 68.6%