Synthesis of Information Related to Transit Practices. Topic SA-47. Transit Signal Priority – Current State of the Practice

Bus Transit Signal Priority (TSP) is an important tool that increases bus speeds and reliability, thereby improving transit system efficiency and effectiveness. Transit agencies implement a wide variety of TSP strategies and parameters, and report different levels of benefits from TSP implementations in various traffic conditions and right-of-way treatments (e.g. mixed vs. dedicated guideway). Currently, only fragmented documentation exists on the TSP strategies and parameters in place at different agencies and there has not been a systematic effort to understand the link between TSP strategies and parameters, and the level of benefit realized. As agencies may have limited understanding of what strategies and parameters are in use in other jurisdictions, and how these decisions tie to the benefits of TSP, it is difficult to weigh the benefits against the tradeoffs involved. This synthesis study aims to document the current practice of transit systems use of TSP to meet the different objectives under diverse conditions; it will provide an overview of 1) TSP strategies and parameters, 2) the resulting benefits and 3) an assessment of to what extent the disparity in benefits realized are driven by strategy and parameter choices. The principal investigator will conduct a literature review focusing on modern deployments (both domestic and international) and a survey of selected North-American transit systems that utilize TSP. The report should also include five case examples that will gather information on the state-of-the-practice, emphasizing lessons learned, current practices, and challenges. The final report will document gaps in knowledge and research needs.      


  • English


  • Status: Active
  • Funding: $45000
  • Contract Numbers:

    Project J-07, Topic SA-47

  • Sponsor Organizations:

    Transit Cooperative Research Program

    Transportation Research Board
    500 Fifth Street, NW
    Washington, DC    20001

    Federal Transit Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Project Managers:

    Garcia-Colberg, Mariela

  • Performing Organizations:

    Texas A&M Transportation Institute, College Station

    Texas A&M University System
    3135 TAMU
    College Station, TX  United States  77843-3135
  • Principal Investigators:

    Walk, Michael

  • Start Date: 20181002
  • Expected Completion Date: 0
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01673589
  • Record Type: Research project
  • Source Agency: Transportation Research Board
  • Contract Numbers: Project J-07, Topic SA-47
  • Files: TRB, RiP
  • Created Date: Jun 25 2018 3:03PM