EFFECT OF REAR LIGHTING ON THE BRAKING REACTIONS OF VEHICLE DRIVERS

EINFLUSS VON RUECKLEUCHTENSYSTEMEN AUF DIE BREMSREAKTIONSZEIT VON KRAFTFAHRZEUGFAHRERN

Various rear lighting systems are being tested in a night driving situation on a simulator. It is possible to influence the braking reaction time by means of colour and arrangement of the lights. When there is no brake light the reaction time of test drivers is increased by 25%. A pair of green rear lights directly next to the red brake lights shorten the reaction time by 16%. Two pairs of green lights with red brake lights in between show a gain of only 10%. A 10% decrease in reaction time is achieved also in a two-stage braking system having a flashing yellow light as a second stage. If the second stage consists of constant red light, the gain is 8 percent. Reaction time is dependent on the change in distance before braking occurs. With decreasing distance, all systems retain their relative decrease in reaction time, except for the two-stage braking system with constant red light. The arrangement with four green rear lights can gain a further 6% in this driving situation. With green rear lights in combination with red brake lights, the test drivers shorten their distance to the car in front. It is recommended that green rear lights be introduced, situated immediately next to red brake lights. The rear lights should be switched on also during daylight. For parking the brake lights should operate with reduced brightness. /TRRL/

  • Availability:
  • Corporate Authors:

    Tetzlaff Verlag GmbH

    Havelstrosse 9, Postfach 4006
    D-6100 Darmstadt 1,   Germany 
  • Authors:
    • Rosemann, A
  • Publication Date: 1977

Language

  • German

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00194972
  • Record Type: Publication
  • Source Agency: Bundesanstalt für Straßenwesen (BASt)
  • Files: ITRD, TRIS
  • Created Date: Jul 11 1979 12:00AM