Work Zone Traffic Control Inspection Ratings Report 2005
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1 Work Zone Traffic Control Report 25 Maryland Department of Transportation State Highway Administration Work Zone Traffic Control Report 25 State Maintained Highway System - IS, US, MD Prepared By Traffic Development and Support Division Office of Traffic and Safety
2 Work Zone Traffic Control Report 25 TABLE OF CONTENTS Summary Concerns... 2 Work Zone Traffic Control Inspection Rating Results... 3 Average District WZTC Setup For All Types of Work... 4 District 1 WZTC Ratings... 5 District 2 WZTC Ratings... 6 District 3 WZTC Ratings... 7 District 4 WZTC Ratings... 8 District 5 WZTC Ratings... 9 District 6 WZTC Ratings... 1 District 7 WZTC Ratings... 11
3 Work Zone Traffic Control Report 25 3 SUMMARY This report is intended to evaluate the performance of the Maryland State Highway Administration (SHA) and track our progress toward safer work zones. Our aim is to have continuous improvement in this important area. This report summarizes the work zone traffic control inspection ratings for all Districts. The Maryland State Highway Administration (SHA) conducted approximately 282 work zone traffic control inspections in 25. The inspections show that overall ratings in the Districts range from B- to A. However, the average overall rating for all the Districts is A-. Concerns Some 14 people lost their lives in work zone accidents in Maryland in 25. The following is a summary of the main concerns related to temporary traffic control (TTC) setups based on the review of inspection reports and discussions with TTC inspectors group. Signs - SHA Typical or TCP not followed - Poor reflectivity - Wrong sign type - Improper sign legend (dirty, damaged) - Incorrect message - Inappropriate/contradictory signs not covered/removed - Improper sign support - Omitted Signs Arrow Panels - Missing arrow panel - Missing bulbs Portable Variable Message Signs - Incorrect, non-relevant message - Malfunctioning elements (LCDs) Channelizing devices - Incorrect spacing - Damaged, dirty or non-reflective - Missing or poor reflectivity General - Traffic control devices used are not NCHRP-35 approved - Incorrect taper - Improper barrier end treatment - Use of non-certified flagger or no flaggers - Non-standard pavement markings - Mowers without lights and traveling against traffic
4 Work Zone Traffic Control Report WORK ZONE TRAFFIC CONTROL (WZTC) INSPECTION RATING RESULTS SHA conducted approximately 282 work zone traffic control inspections in 25. In 25, the Maryland State Highway Administration (SHA) conducted approximately 282 work zone traffic control inspections. Typically, SHA District inspectors performed these inspections. In some cases, traffic engineers in the Districts and/or the Office of Traffic & Safety were also involved in these inspections. The inspections were performed for different types of work zones, but primarily for construction, maintenance, utilities, and traffic. The following is a listing of projects/jobs, the approximate number of inspections that were recorded for each, and the corresponding rating. The average overall rating for all the Districts is A-. Type of Work Number of Inspections* Rating Construction 1387 A- Maintenance 343 A- Traffic 37 B- Utilities 253 B Other 6 B- TOTAL 282 A- * Districts x and x submitted information that was not partitioned into types of work. They are, however, included in the total. This report summarizes the ratings received by the different types of work zones in each District. The goal was to achieve an overall minimum grade of B+ in each District. The inspections have revealed that the overall ratings in the Districts range from B- to A-. The average overall rating for all the Districts is A- (an improvement over 24), with a corresponding numerical score of 9%.
5 Work Zone Traffic Control Report AVERAGE DISTRICT WZTC SETUP INSPECTION RATINGS FOR ALL TYPES OF WORK, JANUARY - DECEMBER A 85 Ratings (%) B C D 5 District 1 District 2 District 3 District 4 District 5 District 6 District 7 Districts DISTRICTS RATING % DISTRICT 1 83 DISTRICT 2 84 DISTRICT 3 89 DISTRICT 4 85 DISTRICT 5 xx DISTRICT 6 92 DISTRICT 7 93
6 Work Zone Traffic Control Report WZTC Ratings Summary (District - 1) Jan - Dec Construction Work Zones Maintenance Work Zones Utility Work Zones OOTS Work Zones 5 Ratings Construction Maintenance Utility OOTS A+ A A- 4 B+ 5 B B C+ C C- D+ D D- F Total
7 Work Zone Traffic Control Report WZTC Ratings Summary (District - 2) Jan - Dec Construction Work Zones Maintenance Work Zones Utility Work Zones Other 1 Ratings Construction Maintenance Utility Other A+ A A- B+ B B- C+ C C- D+ 1 D 1 2 D- F 3 Total
8 Work Zone Traffic Control Report WZTC Ratings Summary (District - 3) Jan - Dec Construction Work Zones Maintenance Work Zones Utility Work Zones Other 4 2 Ratings Construction Maintenance Utility A+ 1 A A- B+ 1 B 76 1 B- C+ C 2 3 C- D+ D 6 5 D- F Total
9 Work Zone Traffic Control Report WZTC Ratings Summary (District - 4) Jan - Dec Construction Work Zones Maintenance Work Zones Utility Work Zones OOTS Work Zones Others 2 Ratings Construction Maintenance Utility OOTS Ratings A+ A A- B+ B B- C+ C C- D+ D D- F Total
10 Work Zone Traffic Control Report WZTC Ratings Summary (District - 5) Jan - Dec Construction Work Zones Maintenance Work Zones Utility Work Zones.2.1 Ratings Construction Maintenance Utility A+ A A- B+ B B- C+ C C- D+ D D- F Total
11 Work Zone Traffic Control Report WZTC Ratings Summary (District - 6) Jan - Dec Ratings Construction Maintenance Utility OOTS Ratings A+ A A B+ 3 B B- 1 1 C+ C C- D+ D D- F 4 8 Total * District 6 did not provide categorical breakdowns of the inspections performed in 24, so this data is unavailable.
12 Work Zone Traffic Control Report WZTC Ratings Summary (District - 7) Jan - Dec Construction Work Zones Maintenance Work Zones Utility Work Zones OOTS Work Zones 1 Ratings Construction Maintenance Utility OOTS Ratings A+ 2 A A- 3 1 B+ B B- 1 C+ C 9 3 C- D+ D D- F 1 1 Total
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