Setting Speed Limits for Safety

Speeding is a major factor in fatal crashes. In 2012, the Federal Highway Administration (FHWA) released an updated USLIMITS2, the web-based software designed to help transportation agencies set appropriate speed limits. States establish speed limits based on standards from the FHWA's Manual on Uniform Traffic Control Devices (MUTCD). The MUTCD requires that speed limit signs are posted at intervals of 5 mi/h, and it lists risk factors to consider when engineering speed limits. The software uses a risk-based set of decision rules using relevant roadway, traffic, and crash data to set appropriate speed limits for specific segments of roadway, recommending speed limits based on site characteristics. This article presents case studies from Michigan, Indiana, and Wisconsin that illustrate the use of USLIMITS2 in the real world.


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Filing Info

  • Accession Number: 01497219
  • Record Type: Publication
  • Files: TRIS, ATRI, USDOT
  • Created Date: Oct 17 2013 7:23PM