Guide Rail Safety Symposium
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1 Ministry of Transportation Guide Rail Safety Symposium MTO Provincial Roadside Safety Update Mark C. Ayton, P. Eng. Senior Engineer, Highway Design MTO Highway Standards Branch
2 MTO Provincial Roadside Safety Update Highway Safety in Ontario Evolving Crash Testing Criteria Evolving Vehicle Fleet Evolving Roadside Safety Hardware Safety Benefits and Cost to Implement MASH MASH Implementation Dates US/MTO MASH Future Work by MTO Construction Standards in Ontario Guide Rail Safety Symposium - October 23,
3 Highway Safety in Ontario Motor vehicle crashes inflict a tremendous toll on Canadian society Ontario s fatality rate of 0.53 per 10,000 licensed drivers was the lowest ever recorded in Ontario (2014) Second lowest in all of North America (2014). Traffic fatalities have steadily declined over the past 24 years: 1,120 fatalities in fatalities in 2014 (second lowest since 1944) Injuries have also decreased: 101,575 in ,081 in 2014 Guide Rail Safety Symposium - October 23,
4 Highway Safety in Ontario: Ministry of Transportation Statistics (2013/2016): 13.5 M Population 8.9 M Registered Motor Vehicles 9.6 M Licensed Drivers 2697 Km Freeways 7378 km Arterial Roads 2435 km Collector Roads 4485 km Local Roads 1778 km Concrete Barrier 2275 km W-Beam 2385 km Cable Guide Rail 21 km High Tension Cable Guide Rail 98 km Box Beam 12,924 W-Beam Terminals 703 Crash Cushions Guide Rail Safety Symposium - October 23,
5 Fatalities per 10,000 Licensed Drivers Licensed Drivers (millions) Highway Safety in Ontario Ministry of Transportation Licensed Driver Population and Fatality Rate: : Partially paved shoulder program 1976: Seatbelt use becomes mandatory 1977: Concrete median barriers 1982: Child car seats become mandatory 1980s: Temporary concrete barriers in construction zones Licensed Drivers 1988: Energy absorbing guide rail terminals 1994: Graduated Licensing System (GLS) introduced Fatality Rate 1991: Ontario Tall Wall concrete median barrier 1995: Shoulder rumble strips on rural freeways 2001: Ignition Interlock Program 2001: Fully paved shoulders on 4-lane freeways 2009: Speed limiters for large trucks Warn range sanctions Ban on hand-held devices 2009: Modern Roundabouts 2006: One Person, One Seatbelt 2010: Zero BAC for 21 & under New Ignition Interlock and Vehicle Impoundment Programs 2010: Centre line rumble strips : Administrative Driver's Licence Suspensions, dedicated R.I.D.E. program funding 1999: Vehicle Impoundment Program 2005: Mandatory Booster Seats 2007: Street Racing Legislation 0 Guide Rail Safety Symposium - October 23,
6 Evolving Crash Testing Criteria: 1962: HRCS Circular : NCHRP Report : TR Circular : NCHRP Report : NCHRP Report : Manual for Assessing Safety Hardware (MASH-09) 2016: MASH-16 (Second Edition published November 17, 2016) Guide Rail Safety Symposium - October 23,
7 MASH: AASHTO Manual for Assessing Safety Hardware Supersedes NCHRP Report 350: Recommended Procedures for the Safety Performance Evaluation of Highway Features Major revisions include: Changes to test vehicles Changes to numbers and impact conditions Changes to evaluation criteria Additional test documentation requirements Guide Rail Safety Symposium - October 23,
8 Evolving Vehicle Fleet 2041 kg Ministry of Transportation 2000 kg 2270 kg NCHRP kg 1100 kg October 24, Guide Rail Safety Symposium 8
9 Evolving Safety Hardware: W-Beam Ministry of Transportation Report 350 TL-3 System Rail splices at posts 1.829m steel posts 1.905m post spacing 20cm wooden blocks Elimination of rectangular beam washers and steel offset blocks Top of Rail: 685 to 735mm MASH TL-3 System Rail splices between posts 1.829m steel posts 1.905m post spacing 20cm wooden offset blocks Top of Rail: 785mm +/- 25mm 9
10 Evolving Safety Hardware: W-Beam Ministry of Transportation MASH TL m steel posts on 2H:1V slope 1.905m post spacing 20cm wooden offset blocks MASH TL-3 Adjacent to barrier curb 1.829m steel posts 1.905m post spacing 30cm wooden offset blocks MASH TL-2 Adjacent to Sidewalk and Curb 1.829m steel posts 1.905m post spacing 30cm wooden offset blocks 10
11 Evolving Safety Hardware: W-Beam Terminals Report 350 TL-3 ET-Plus (Extruder) X-Lite Sequential Kinking Terminal (SKT) 11
12 Evolving Safety Hardware: W-Beam Terminals MASH TL-3 SoftStop MAX-Tension MASH Sequential Kinking Terminal (MSKT) 12
13 Evolving Safety Hardware: Cable Guide Rail MTO 3-Cable Low Tension Cedar Post System: 3-12mm dia. Cables Top cable at 685mm 2.350m cedar posts 3.65m post spacing MTO Crash Test (1967): 1800 kg station wagon 80 km/h at 25 0 installation adjacent to 3H:1V ditch 13
14 Evolving Safety Hardware: Cable Guide Rail NCHRP Report 350 TL-3 Steel Post System: Low tension 3-cable guide rail system placed adjacent to 1.5H:1V slope 3-19mm dia. Cables Top cable at 762mm 1.6m S75x8.5 steel posts 4.9m post spacing Subsequent testing with 1.2m post spacing offset 1.2m from slope breakpoint was successful MwRSF Research Report No. TRP , Feb/05, NCHRP Report 350 Test
15 Evolving Safety Hardware: Cable Guide Rail MASH TL-3 High Tension 3-Cable Guide Rail Shoulder or Slope Installations Safence Slope System: 3-19mm dia. cables Top cable at 900mm 2.256m rectangular steel posts 2.0m post spacing Post set 200mm beyond breakpoint on 2H:1V slope 15
16 Evolving Safety Hardware: Cable Guide Rail Safence Slope System: MASH Test No MASH Test No
17 Safety Benefits and Cost to Implement MASH MASH is the latest crash test guideline and criteria available. MASH is the culmination of over 50 years of crash testing experience and collective judgement and expertise of professionals in the field of roadside safety design. MASH safety hardware crash tested to worst practical conditions 85 th percentile impact speed, 85 th percentile impact angle, 5 th and 95 th percentile vehicle mass, and critical impact point. MASH W-beam systems crash tested under conditions matching existing roadside configurations and cost the same as Report 350 systems. MASH cable guide rail systems crash tested under conditions to match existing roadside configurations and existing freeway depressed median configurations. MASH W-beam terminals crash tested at critical impact point and angles selected from a range such that risk of failure is maximized, and cost slightly more than Report 350 systems. MASH crash cushions crash tested at critical impact point and angles selected from a range such that risk of failure is maximized, and cost the same or slightly more than Report 350 systems. 17
18 MASH Implementation Dates FHWA/AASHTO December 22, 2015 Implementation Schedule After the following dates, only safety hardware evaluated using the new edition of MASH will be allowed on the National Highway System in the US for new permanent installations and full replacements: Dec 31/17: w-beam barriers and cast-in-place concrete barrier June 30/18: w-beam terminals Dec 31/18: cable barriers, cable barrier terminals, and crash cushions Dec 31/19: bridge rails, transitions, all other longitudinal barriers (including portable barriers installed permanently), all other terminals, sign supports, and all other breakaway hardware Temporary work zone devices, including portable barriers, manufactured after December 31, 2019, must have been successfully tested to MASH. Such devices manufactured on or before this date, and successfully tested to NCHRP Report 350 or the 2009 edition of MASH, may continue to be used throughout their normal service lives. 18
19 MASH Implementation Dates SAFETY HARDWARE MTO FHWA/AASHTO W-Beam May 27/16 Dec 31/17 Cast-in-place Concrete Barrier Dec 31/17 W-Beam Terminals Sept 1/16 June 30/18 Cable Barriers - Roadside Dec 31/16 Dec 31/18 Cable Barriers - Median TBA Cable Barrier Terminals TBA Crash Cushions TBA Bridge Rails TBA Dec 31/19 Transitions TBA All Other Longitudinal Barriers TBA All Other Terminals TBA Sign Supports TBA All Other Breakaway Hardware TBA Temporary Work Zone Devices TBA Dec 31/19 19
20 MASH: Future Work by MTO Ministry of Transportation MTO is a member of the Roadside Safety Pooled Fund - Roadside Safety Research for MASH Implementation. MTO in partnership with 20 US State Departments of Transportation and Texas Transportation Institute (TTI) are prioritizing designs, analysis, testing and evaluation of more cost effective roadside safety hardware, procedures and guidelines that meet MASH criteria. MTO to use results to further implement MASH safety hardware before end of
21 Construction Standards In Ontario: Ontario Provincial Standards for Roads and Public Works (OPS) is a comprehensive set of Construction Standards for use by road and public works owners, contractors, and consultants in Ontario. Use of OPS by the province or municipalities is not mandatory. OPS USER NOTES: The standards in this OPS manual are for use as pre-printed components of a construction contract. They are not prepared as design aids or as a manual of design procedures, and they will not competently serve those purposes. Each infrastructure owner is responsible for determining implementation dates and directions for use of OPS. Ministry of Transportation 21
22 Construction Standards In Ontario: MTO as a partner in OPS shares roadside safety hardware standards that meet MASH that have been implemented by MTO on provincial highway contracts (MTODs) with OPS Traffic Safety Committee (TSC) for their review, consideration and publishing as Ontario Provincial Standard Specifications (OPSS) and Ontario Provincial Standard Drawings (OPSD) for use by municipal road authorities across Ontario. OPS: MTO - OPSS.PROV.XXX Municipalities - OPSS.MUNI.XXX Barrier and Terminal Specifications being updated by TSC for MASH: Steel Beam Guide Rail (W-Beam): OPSS 721 Steel Beam Energy Attenuating Terminals (SBEAT): OPSS 732 Steel Beam Terminal: OPSS 733 New 2017 Crash Cushion Attenuating Terminal: OPSS 731 (Cancel in Nov 2017) Eccentric Loader Terminal: OPSS 730 (Cancel in Nov 2018) High Tension Cable Guide Rail: OPSS 720 New April 2018 Cable Guide Rail: OPSS 721 (Cancel in Nov 2018) 22
23 Construction Standards In Ontario: Example: SBGR (W-Beam) MTO Type M SBGR (MASH) implemented for new installations on MTO Contracts advertised after May 27/16 (Announced Jan 28/16). OPSD discontinued by MTO on May 27/16. OPSD implemented by MTO Mar/17 to replace MTOD OPSS.PROV.721 and MTO Standard Special Provisions Ministry of Transportation OPS TSC converted MTOD into OPSD in 2016 Published Nov 30/16. OPS.MUNI.721 Designer Action requires designer to specify type of SBGR (ie OPSD or OPSD ) in contracts. TSC plans to cancel OPSD on Nov 30/18 when OPSS.MUNI.721 is updated. 23
24 MTO Contact Information: Mark C. Ayton, P. Eng. Senior Engineer, Highway Design Design & Contract Standards Office Ontario Ministry of Transportation 301 St. Paul St. St. Catharines, ON L2R 7R4 (905) Mike Pearsall, P. Eng. Head, Design Standards Section Design & Contract Standards Office Ontario Ministry of Transportation 301 St. Paul St. St. Catharines, ON L2R 7R Guide Rail Safety Symposium - October 23,
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