Synthesis of Information Related to Highway Practices. Topic 56-05. Traffic Analysis Practices for Non-Motorized Modes (Vulnerable Road Users)

Traffic analysis, whether for operational, design, or planning purposes, plays a crucial role in informed decision-making regarding transportation investments. While historically focused on motorized modes and roadway facilities, recent decades have seen advancements in incorporating non-motorized modes (also known as Vulnerable Road Users) such as pedestrians and cyclists into traffic analysis practices. Despite the development of methodologies like the Highway Capacity Manual (HCM) for non-motorized modes, there is limited information on how state DOTs are integrating these modes into their traffic analysis processes. The objective of this synthesis is to document the current state of the traffic analysis practice (not limited to the deterministic methods such as HCM) for non-motorized modes (or multimodal analysis). Information to be gathered includes (but is not limited to): administrative procedures or protocols affecting the consideration of non-motorized modes in traffic analysis projects; integration of non-motorized modes in current traffic analysis practices; recent projects where analysis results for non-motorized modes were obtained; primary reasons for not considering non-motorized modes; methods and guidelines for traffic analysis involving non-motorized modes; tools, data sources, and methods used to incorporate and analyze non-motorized modes in traffic analysis; and outputs obtained from traffic analysis related to non-motorized modes and desired outputs that were abandoned due to limitations. Information will be gathered through a literature review, a survey of state DOTs, and follow-up interviews with selected DOTs for the development of case examples. Information gaps and suggestions for research to address those gaps will be identified.


  • English


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

    Project 20-05, Topic 56-05

  • Sponsor Organizations:

    National Cooperative Highway Research Program (NCHRP) Synthesis

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

    American Association of State Highway and Transportation Officials (AASHTO)

    444 North Capitol Street, NW
    Washington, DC  United States  20001

    Federal Highway Administration

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

    Nasri, Arefeh

  • Start Date: 20240531
  • Expected Completion Date: 0
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01920390
  • Record Type: Research project
  • Source Agency: Transportation Research Board
  • Contract Numbers: Project 20-05, Topic 56-05
  • Files: TRB, RIP
  • Created Date: May 31 2024 8:33PM