HANDLING OF CARS DURING BRAKING ON BENDS

FAHRVERHALTEN VON PKW BEIM BREMSEN IN DER KURVE

ACCIDENTS ON BENDS FORM 8-12 PERCENT OF ACCIDENTS INVOLVING PERSONAL INJURY. IT HAS BEEN ESTABLISHED THAT IN 2-6 PERCENT OF THE ACCIDENTS, BRAKING ON THE BEND WAS AT LEAST A PARTIAL CAUSE OF THE ACCIDENT. TO CONFIRM THE THEORY OF BRAKING ON A BEND TESTS WERE CARRIED OUT WITH THREE BRAKING FORCE DISTRIBUTIONS: NORMAL PRODUCTION LINE BRAKING, REAR AXLE OVERBRAKED AND FRONT AXLE OVERBRAKED. THE TESTS WERE UNDERTAKEN ON A CIRCULAR TRACK WITH CONSTANT STEERING ANGLE AND CONSTANT INITIAL TRANSVERSE ACCELERATION. IT WAS SHOWN THAT WITH COMPLETE BRAKING THE SIDEWAYS FORCE ON THE WHEELS COLLAPSES AND THE VEHICLE TRAVELS ROUGHLY TANGENTIALLY OUT OF THE CIRCLE. IF THERE IS A GREATER PROPORTION OF BRAKING FORCE ON THE FRONT AXLE, STEERING CAPACITY IS MARKEDLY DECREASED. EVEN WITH RELATIVELY SMALL DECELERATIONS THE TRANSVERSE ACCELERATION IS NOT RETAINED AND THE VEHICLE TRAVELS STRAIGHT AHEAD. IF THERE IS A GREATER PROPORTION OF BRAKING FORCE ON THE REAR AXLE, THE STABILITY OF THE VEHICLE IS DECREASED. OTHER TEST RESULTS ARE DISCUSSED.

  • Authors:
    • ROMPE, K
    • GRUNOW, D
  • Publication Date: 1978-11

Language

  • German

Media Info

  • Pagination: 221-8
  • Serial:
    • Verkehrsunfall
    • Volume: 16
    • Issue Number: 11
    • Publisher: Information Verlag

Subject/Index Terms

Filing Info

  • Accession Number: 01289047
  • Record Type: Publication
  • Source Agency: Bundesanstalt für Straßenwesen (BASt)
  • Files: ITRD
  • Created Date: Nov 21 2010 1:36AM