The program determined the effects of selected modes of disc-and drum-brake component degradation on vehicle braking performance. The results are used to recommend brake-component and system-performance limits of degradation. An inertial brake dynamometer was used to evaluate physically the effects of thin friction materials, friction-material wear characteristics, effects of friction material contamination, and the effects of heat spots, rotor scoring, out-of-round drums and disc lateral runout. The other major tasks were the evaluation of side-to-side brake imbalance with vehicle-handling models and vehicle tests conducted with sample drivers and the analytical determination of inspection criteria for brake system proportioning (front-to-rear ratio) and brake pedal reserve.

  • Supplemental Notes:
    • See also Volume 1, PB-237 595.
  • Corporate Authors:

    Bendix Corporation


    National Highway Traffic Safety Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • KERANEN, T W
    • Schwartz, H W
    • Jacko, M J
    • Tarr, W R
    • Leung, C K
  • Publication Date: 1974-11

Media Info

  • Pagination: 432 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00090045
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: BRL/TR-74-7178 Final Rpt.
  • Contract Numbers: DOT-HS-090-3-710
  • Files: NTIS, TRIS, USDOT
  • Created Date: Apr 22 1975 12:00AM