Safety Effects of Transit Signal Priority: Magnitude and Mechanism
Transit signal priority (TSP) has been implemented for transit systems in many cities of the United States. In evaluating TSP systems, more attention has been given to its operational effects than to its safety effects. Existing studies assessing TSP’s safety effects reported mixed results, indicating that the safety effects of TSP vary in different contexts. Prior studies in the United States evaluating TSP implementations in two metropolitan areas reported reductions in overall crashes on TSP corridors after TSP activation. However, the most recent study results indicate that there is potential increase in pedestrian and bike-involved crashes associated with TSP implementations. This proposed project will be led by the research team from the Traffic Operations and Safety (TOPS) Laboratory at the University of Wisconsin-Madison, in collaboration with Metro Transit, the Minneapolis-Saint Paul metropolitan area transit agency, to evaluate the safety effects of Metro Transit Bus Route 5 TSP implementations which will be activated in December 2018. TSP, transit operations/incidents, roadway, and crash data will be gathered from Metro Transit and Minnesota Department of Transportation. Before-after analyses will be conducted to evaluate the TSP implementation’s effects on transit in-vehicle safety and road traffic safety. Statistical models will be developed to investigate the mechanisms of TSP’s safety effects. The research findings will help researchers and practitioners better understand both the magnitude and mechanism of TSP’s safety effects, and will provide support in transit agencies’ decision-making process regarding future implementations of TSP or similar technologies.
Project
- Status: Completed
- Funding: $52,499.54
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Contract Numbers:
CTEDD 019-07 SG
69A3551747134
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Sponsor Organizations:
Center for Transportation Equity, Decisions & Dollars (CTEDD)
University of Texas at Arlington
Arlington, TX United States 76019University of Texas at Arlington
Box 19308
Arlington, TX United States 76019-0308Office of the Assistant Secretary for Research and Technology
University Transportation Centers Program
Department of Transportation
Washington, DC United States 20590 -
Managing Organizations:
Center for Transportation Equity, Decisions & Dollars (CTEDD)
University of Texas at Arlington
Arlington, TX United States 76019University of Texas at Arlington
Box 19308
Arlington, TX United States 76019-0308 -
Performing Organizations:
University of Wisconsin-Madison
1415 Engineering Drive
2205 EH Madison
Madison, WI United States 53706 -
Principal Investigators:
Noyce, David
- Start Date: 20190215
- Expected Completion Date: 20200214
- Actual Completion Date: 0
- USDOT Program: University Transportation Centers
Subject/Index Terms
- TRT Terms: Before and after studies; Bus priority; Crash data; Evaluation and assessment; Implementation; Statistical analysis; Traffic safety; Traffic signal priority; Transit buses
- Subject Areas: Highways; Operations and Traffic Management; Public Transportation; Safety and Human Factors;
Filing Info
- Accession Number: 01714844
- Record Type: Research project
- Source Agency: Center for Transportation Equity, Decisions & Dollars (CTEDD)
- Contract Numbers: CTEDD 019-07 SG, 69A3551747134
- Files: UTC, RiP
- Created Date: Aug 25 2019 1:29PM