FLEET ACCIDENT EVALUATION OF FMVSS 121

The Interim Report presents preliminary results based on the first year of the fleet monitoring program to evaluate the safety impact of FMVSS 121. Mileage, accidents, and brake system maintenance are being collected on a national sample of vehicles. The fleets and vehicles were selected from manufacturers' sales lists for the production period January 1974 through January 1976 using probability-based sampling techniques. A complete description of the sample design is included. Preliminary results indicate that the adjusted accident rate is slightly lower (19%) for the post-standard vehicles. However, brake system maintenance on the post-standard vehicles occurs more frequently (35%). These results are not statistically significant.

• Corporate Authors:

  Highway Safety Research Institute

  Huron Parkway and Baxter Road
  Ann Arbor, MI  United States  48109

  National Highway Traffic Safety Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Campbell, K L
  • Wolfe, A C
• Publication Date: 1977-10

Media Info

• Pagination: 227 p.

Subject/Index Terms

• TRT Terms: Air brakes; Brakes; Crash rates; Crash types; Evaluation; Fleet management; Highways; Maintenance; Probability theory; Safety; Safety and security; Sampling; Standards; Statistical analysis; Traffic crashes; Transportation safety; Vehicle maintenance
• Uncontrolled Terms: Fleets; Mileage; Motor vehicle accidents
• Subject Areas: Data and Information Technology; Highways; Maintenance and Preservation; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00175278
• Record Type: Publication
• Source Agency: Transportation Statistical Reference File, TSC
• Report/Paper Numbers: DOT-HS-803-233 Intrm Rpt., UM-HSRI-77-35
• Contract Numbers: DOT-HS-6-01286
• Files: NTIS, TSR, TRIS, USDOT
• Created Date: May 18 1978 12:00AM