ACCIDENT RATES FOR LONGER COMBINATION VEHICLES

The objectives of this study were two-fold: (1) to determine the relative accident rates, in accidents per million vehicle miles of travel, of longer combination vehicles (LCVs) and Non-LCVs; and (2) to determine, to the extent possible, the relative accident rates for LCV and Non-LCV subgroups, including Tractor-Semitrailers, STAA Doubles, Rocky Mountain Doubles, Turnpike Doubles, and Triples. The study methodology consisted of site visits to commercial motor carriers which operate LCVs. Mileage and accident data, covering periods of up to five years, were collected from participating carriers and used to calculate and compare accident rates for LCV and Non-LCV configurations. When practical, comparisons in accident rates among LCV subgroups were also calculated. The differential impacts, if any, which key external factors--area, route, terrain, time-of-day, and driver experience--had on LCV and Non-LCV accident outcomes were also assessed. The severity of LCV versus Non-LCV accidents was examined as well. This final report documents the results of these investigations.

• Record URL:
  https://rosap.ntl.bts.gov/view/dot/54221
• Corporate Authors:

  Scientex Corporation

  1655 North Fort Myer Drive, Suite 400
  Arlington, VA  United States  22209

  Federal Highway Administration

  Office of Motor Carriers, 1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Ticatch, J L
  • Kraishan, M
  • Virostek, G
  • Montella, L
• Publication Date: 1996-10

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; Tables;
• Pagination: 83 p.

Subject/Index Terms

• TRT Terms: Alternatives analysis; Commercial vehicles; Crash rates; Crash severity; Oversize loads; Tractor trailer combinations; Vehicle size
• Uncontrolled Terms: Longer combination vehicles; Triple trailers
• Old TRIS Terms: Double trailers; Oversized vehicles
• Subject Areas: Highways; Motor Carriers; Safety and Human Factors; I81: Accident Statistics;

Filing Info

• Accession Number: 00745818
• Record Type: Publication
• Report/Paper Numbers: FHWA-MC-97-003, Scientex-1452-01, Final Report
• Contract Numbers: DTFH61-94-C-00178
• Files: NTL, TRIS, USDOT
• Created Date: Feb 26 1998 12:00AM