A PROCEDURE FOR EVALUATING VEHICLE BRAKING PERFORMANCE

THE REPORT DESCRIBES A METHOD FOR DETERMINING VEHICLE BRAKING EFFICIENCY WHEREBY ACTUAL STOPPING DISTANCES ACHIEVED BY THE VEHICLE ARE COMPARED TO IDEAL STOPPING DISTANCES THEORETICALLY ACHIEVABLE IF THE VEHICLE BRAKE SYSTEM WERE ABLE TO MODULATE THE BRAKES SUCH THAT THE TIRES PRODUCED PEAK BRAKING FORCES THROUGHOUT THE STOP. TEST PROCEDURES ARE DESCRIBED FOR BOTH VEHICLE AND TIRE TESTS, ALONG WITH THE METHOD EMPLOYED FOR CALCULATING IDEAL STOPPING DISTANCE. RESULTS FROM TESTS AND CALCULATIONS ARE PRESENTED FOR TWO VEHICLES EQUIPPED WITH FOUR-WHEEL ANTILOCK SYSTEMS, WHICH DEMONSTRATE THAT THE METHOD IS VIABLE AND REALISTIC. A MEANS OF COMPARING TIRE PEAK CAPABILITY ON A GIVEN SURFACE TO THAT PRODUCED BY A STANDARD TIRE IS ALSO DISCUSSED. /AUTHOR/

• Supplemental Notes:
  • Contract DOT-HS-031-1-051
• Corporate Authors:

  Highway Safety Research Institute

  Huron Parkway and Baxter Road
  Ann Arbor, MI  United States  48109
• Authors:
  • Murphy, R W
• Publication Date: 1971-10

Media Info

• Pagination: 24 p.

Subject/Index Terms

• TRT Terms: Automobiles; Brakes; Braking; Evaluation; Performance; Statistical analysis; Testing; Tires; Vehicles
• Subject Areas: Data and Information Technology; Highways; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00224041
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: Final Rept
• Files: TRIS
• Created Date: Aug 5 1973 12:00AM