HARMONIZATION OF BRAKING REGULATIONS - REPORT NUMBER 6: TESTING TO ADDRESS SURFACE FRICTION AND VEHICLE BRAKING EFFICIENCY COMMENTS TO THE SNPRM. INTERIM REPORT
This report describes testing conducted to address certain comments to the Supplemental Notice of Proposed Rulemaking (SNPRM) for FMVSS 135 (Notice 4) regarding surface friction measurement and vehicle braking efficiency. Traction trailer tests were conducted comparing two reference tires, the ASTM E501 and the Standard Reference Test Tire (SRTT), on five surfaces at various speeds at seven different times. Tests were also conducted on seven passenger cars to evaluate the ECE Regulation 13 Annex 13 test procedure for determining peak coefficient of friction and braking efficiency. The results of the Annex 13 peak coefficient of friction measurements were compared to traction trailer tests with the same tires and the Annex 13 efficiency measurements were compared to results of tests on a Road Transducer Plate (RTP) facility.
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Corporate Authors:
National Highway Traffic Safety Administration
Vehicle Research and Test Center, P.O. Box 37
East Liberty, OH United States 43319 -
Authors:
- Flick, M A
- RADLINSKI, R W
- Publication Date: 1989-3
Media Info
- Features: Appendices; Figures; References; Tables;
- Pagination: 95 p.
Subject/Index Terms
- TRT Terms: Braking; Braking performance; Coefficient of friction; Friction; Test procedures; Testing; Traction
- Identifier Terms: Federal Motor Vehicle Safety Standards
- Old TRIS Terms: Ece regulations
- Subject Areas: Highways; Vehicles and Equipment; I91: Vehicle Design and Safety;
Filing Info
- Accession Number: 00496490
- Record Type: Publication
- Source Agency: National Highway Traffic Safety Administration
- Report/Paper Numbers: VRTC-87-0096, HS-807 410
- Files: HSL, TRIS, USDOT
- Created Date: Aug 31 1990 12:00AM