Driver Perception Response Time during the Signal Change Interval

This article reports on a study undertaken to evaluate driver perception response time (PRT) during a traffic signal change interval. The authors first describe the importance of PRT values for traffic signal change interval design. Current methods used to validate the design PRT value from on-site observational studies have failed to yield convincing proof that the one-second value is adequate. The authors used a transitional zone (TZ) as a modification to on-site data capture and extraction, used to overcome the deficiency in on-site observational studies. The TZ allows the systematic identification and exclusion of those drivers who have time to delay their responses. Their inclusion in past studies inflated and influenced PRT values. The authors conclude that their exclusion in this study results in a more accurate PRT value.

  • Availability:
  • Authors:
    • Goh, Pin-Kai
    • Wong, Yiik-Diew
  • Publication Date: 2004


  • English

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Filing Info

  • Accession Number: 01150410
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 9 2010 11:24AM