Synthesis of Information Related to Highway Practices. Topic 56-12. Practices on Management, Operation, and Maintenance of Automated Traffic Signal Performances Measures

State DOTs traditionally manage traffic signals through routine, scheduled processes that lack active performance monitoring, leading to inefficient resource allocation and potential safety and operational issues going unaddressed. Recently, there has been a shift toward Automated Traffic Signal Performance Measures (ATSPM) to actively manage signal operations, including timing optimization. ATSPM offers insights and performance metrics, facilitating dynamic signal timing optimization without extensive manual data collection. By directing resources strategically, ATSPM aims to enhance safety and reliability across all transportation modes. However, DOTs face barriers hindering ATSPM's full potential. The objective of this synthesis is to document state DOT practices for enhancing traffic signal management, operations, and maintenance along networks and corridors. The synthesis will focus primarily on practices related to the application of ATSPM to streamline these tasks. Information to be gathered includes (but is not limited to): (1) State DOTs use of ATSPM for active traffic signal monitoring, evaluation, and optimization; (2) ATSPM's role in supporting maintenance and ensuring a state of good repair; (3) Development of skills within DOTs concerning policy, procedure, and mandatory software for ATSPM implementation, including staff training initiatives; (4) Common applications of traffic signal optimization processes, encompassing in-house programs, corridor studies, and post-construction projects; (5) Factors influencing traffic signal optimization, including procedural policies, funding and scheduling constraints, extent of data collection, geographic considerations, and safety performance factors; (6) Adoption of big data practices and procedures, encompassing data sources, data age, frequency of updates, and data flow techniques in operational models; (7) Review practices for traffic signal optimization and safety performance analysis; (8) Examination of qualitative and quantitative return on investment metrics; and (9) Barriers and constraints hindering the transition from traditional reactive traffic signal timing to active approaches using tools like ATSPMs.


  • English


  • Status: Proposed
  • Funding: $55000
  • Contract Numbers:

    Project 20-05, Topic 56-12

  • Sponsor Organizations:

    National Cooperative Highway Research Program (NCHRP) Synthesis

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

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    American Association of State Highway and Transportation Officials (AASHTO)

    444 North Capitol Street, NW
    Washington, DC  United States  20001
  • Project Managers:

    Nasri, Arefeh

  • Start Date: 20240528
  • Expected Completion Date: 0
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01920383
  • Record Type: Research project
  • Source Agency: Transportation Research Board
  • Contract Numbers: Project 20-05, Topic 56-12
  • Files: TRB, RIP
  • Created Date: May 31 2024 7:45PM