HOV/HOT Freeway Crash Prediction Method for the Highway Safety Manual

The first edition of the AASHTO Highway Safety Manual (HSM) in 2010 provided the transportation industry with a method to estimate crash type and frequency by severity for standard highway facility types. However, the HSM does not address freeway facilities with high-occupancy vehicle (HOV) lanes, high-occupancy toll (HOT) lanes, or other managed-lane strategies. There are many design elements of freeways with HOV/HOT lanes that influence performance. Research was needed to develop a safety predictive methodology that can be used to estimate the expected crash frequency and severity of a range of freeway facilities with HOV or HOT with various geometric and traffic volume characteristics. The objectives of this research were to (a) develop a predictive methodology that can be used to estimate crash frequency and severity for freeway facilities, and associated ramps, with HOV or HOT lanes and (b) provide a tool for highway agencies to quantify safety performance in planning, project development, and operation of freeways with HOV or HOT lanes.

• Record URL:
  • http://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=4498
• Supplemental Notes:
  • The agency's report is available as Web-Only Document 387: https://doi.org/10.17226/27450

Language

• English

Project

• Status: Completed
• Contract Numbers:

  Project 17-89A

• Sponsor Organizations:

  Federal Highway Administration

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

  State Departments of Transportation (participating member states of American Association of State Highway Transportation Officials (AASHTO))

  American Association of State Highway Transportation Officials (AASHTO)
  444 North Capitol Street, NW
  Washington, DC  United States  20001
• Managing Organizations:

  National Cooperative Highway Research Program (NCHRP)

  Transportation Research Board
  500 Fifth Street, NW
  Washington, DC  United States  20001
• Project Managers:

  Harrigan, Edward

• Performing Organizations:

  Vanasse Hangen Brustlin, Inc.

  ,    
• Principal Investigators:

  Himes, Scott

• Start Date: 20180710
• Expected Completion Date: 20211231
• Actual Completion Date: 20211231

Subject/Index Terms

• TRT Terms: Crash risk forecasting; Crash severity; Crash types; Freeways; High occupancy toll lanes; High occupancy vehicle lanes; Methodology
• Identifier Terms: Highway Safety Manual
• Subject Areas: Highways; Planning and Forecasting; Safety and Human Factors;

Filing Info

• Accession Number: 01675047
• Record Type: Research project
• Source Agency: Transportation Research Board
• Contract Numbers: Project 17-89A
• Files: TRB, RIP
• Created Date: Jul 17 2018 8:53AM