Safety Effects of Raising Speed Limits to 75 mph and Higher

The objective of this research is to provide guidance to assist highway agencies in estimating the safety impacts of increasing speed limits to 75 mph or more. This should include information to support the consideration of where, when, and by how much speed limits may or may not be increased on existing facilities and newly constructed roads. The guidance should also identify mitigation strategies that may be implemented to offset potential impacts.nding.


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  • Status: Active
  • Funding: $500000
  • Contract Numbers:

    Project 17-79

  • Sponsor Organizations:

    American Association of State Highway & Transportation Officials (AASHTO)

    444 North Capitol Street, NW, Suite 225
    Washington, DC  United States  20001

    National Cooperative Highway Research Program

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

    Jared, David

  • 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:

    Dixon, Karen

  • Start Date: 20160919
  • Expected Completion Date: 20201231
  • Actual Completion Date: 0
  • Source Data: RiP Project 40219

Subject/Index Terms

Filing Info

  • Accession Number: 01572381
  • Record Type: Research project
  • Source Agency: Transportation Research Board
  • Contract Numbers: Project 17-79
  • Files: TRB, RIP
  • Created Date: Aug 7 2015 1:01AM