THE EFFECT OF A COLLISION AVOIDANCE SYSTEM ON DRIVERS' BRAKING RESPONSES

The present experiment was carried out in the BRIMMI project, part of the EUREKA PROMETHEUS program, and investigated drivers' braking responses when equipped with an experimental collision avoidance system (CAS). The effects of two particular factors on the driver's braking point in a collision situation were tested. These were the timing of Time-To-Collision (TTC) warnings and the speeds of a following vehicle and target vehicle. Subjects were seated in a stationary vehicle and viewed driving scenes projected onto a large screen. A graded 'traffic light' display was used, in which the number and color bars changed from green to amber to red with decreasing time headway. An auditory warning was also presented as the first red bar appeared. Subjects were required to operate the brake pedal to indicate the last moment at which braking must commence in order to avoid collision with the vehicle shown on the video. The timing of the CAS warning was varied across clips, appearing at a TTC of 3, 4 or 5 seconds. Results showed that braking behavior could be influenced by the presence of a CAS, in that subjects tended to brake earlier when presented with earlier warnings.

Language

  • English

Media Info

  • Features: Figures; References;
  • Pagination: v.p.
  • Monograph Title: MOVING TOWARD DEPLOYMENT. PROCEEDINGS OF THE 1994 ANNUAL MEETING OF IVHS AMERICA

Subject/Index Terms

Filing Info

  • Accession Number: 00670110
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Dec 1 1994 12:00AM