BRAKING AND TRACTION TESTS ON ICE, SNOW, AND ON BARE PAVEMENTS

INADEQUATE TRACTION AND REDUCED VISIBILITY ARE THE MAJOR HAZARDS OF WINTER DRIVING, CAUSING THE MILEAGE DEATH RATE IN THE NORTHERN U. S. TO BE 24 TO 53 PERCENT HIGHER IN WINTER THAN IN SUMMER. TESTS WERE MADE ON BRAKING, SKIDDING, AND TRACTION OF PASSENGER CARS AND TRUCKS OF ALL TYPES ON LAKE ICE, ROAD ICE, PACKED SNOW, AND CONCRETE PAVEMENTS. INVESTIGATIONS WERE MADE OF ALL MAJOR TYPES OF WINTER DRIVING EQUIPMENT AND SPECIAL DRIVING TECHNIQUES USED TO PREVENT ACCIDENTS. RESULTS INDICATE THAT THE SLIPPERINESS OF ICE IS HIGHLY VARIABLE, AFFECTED BY TEMPERATURE, WETNESS OR DRYNESS, WHETHER IT IS SUNNY OR CLOUDY, GRAININESS OF THE ICE, ETC. THUS VEHICLE PERFORMANCE ON ICE IS EXTERMELY VARIABLE. IT IS RECOMMENDED THAT SNOW AND ICE BE PROMPTLY REMOVED FROM THE PAVEMENT, THAT SURFACES BE TREATED WITH ABRASIVES, THAT LOWER VEHICLE SPEEDS BE USED, THAT TIRE CHAINS BE EMPLOYED, AND THAT VEHICLES BE STOPPED BY PUMPING THE BRAKES OR POWER BRAKING RATHER THAN LOCKED WHEEL STOPPING. /AUTHOR/

  • Supplemental Notes:
    • Vol 27, pp 340-360, 14 FIG, 7 TAB
  • Authors:
    • Moyer, R A
  • Publication Date: 1948

Media Info

  • Monograph Title: Proceedings of the Twenty-Seventh Annual Meeting of the Highway Research Board Held at Washington, D.C. December 2-5, 1947
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00221315
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Jul 2 1971 12:00AM