Commercial motor vehicle speed control devices

Details

• Corporate Creators:
  United States. Department of Transportation. National Highway Traffic Safety Administration
• Subject/TRT Terms:
  • Trucks
  • Heavy duty trucks
  • Trucking safety
  • Truck crashes
  • Speeding
  • Speed detectors
  • Collisions
  • RESEARCH AND DEVELOPMENT OR R&D
  • COMMERCIAL VEHICLES OPERATIONS OR CVO
  • ADVANCED VEHICLE CONTROL SYSTEMS OR AVCS
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• Publication/ Report Number:
  DOT HS 807 725
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Corporate Publisher:
  United States. Joint Program Office for Intelligent Transportation Systems
• Abstract:
  This report reviews the problem of heavy vehicle speeding (in particular, speeding at greater than 65 mph) ; and speeding-related crash involvements. The report describes and assesses devices available to control ; truck speed, and addresses the question of whether the use of speed control devices by heavy trucks should ; be mandated. The report finds that, by all measures of crash involvement, speeding is not a significant ; factor in the crash picture of single-unit trucks. Thus, most of the report addresses combination-unit trucks, ; which present a more complex picture. ; Non-detectable radar studies show that highway speed limit compliance by combination-unit trucks is poor, ; but better than that of passenger vehicles. Most trucks that speed travel at just over the posted speed limit. ; Crash statistics indicate that speeding is generally less involved in combination-unit truck crashes than it is ; in passenger vehicle crashes. The report describes devices available to control truck speed, and ways that ; they are applied in commercial fleet settings. The report is supportive of fleet applications of speedmonitoring ; and speed-limiting devices, but concludes that there is not sufficient justification to consider ; requiring all heavy trucks to be so equipped. Problem size statistics suggest that the number of target ; crashes is low, e.g., approximately 30 fatal crash involvements per year for combination-unit trucks. This ; small crash problem size, together with uncertainties regarding the potential for crash reduction, suggest ; that the benefits of mandatory speed limitation are questionable.
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• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/3140/dot_3140_DS1.pdf
• File Type:
  [PDF - 489.94 KB]
• Collection(s):
  ITSJPO Digital Library
• Main Document Checksum:
  urn:sha-512:322b0f949d5c9e6b9566e3c9a4698292b334251f85cb123c5a32ce9ade78e35b2d908f56d73d0ee5abc979ad8ab9f21e92194511a8c0c8fd4f3e840d096eb08e