A Cybernetic Perspective on Car Following in Fog

Drivers often drive at a closer time headway (THW) in fog than in clear weather conditions for similar speed ranges (White & Jeffery, 1980). Closer following is generally considered more dangerous. The hypothesis pursued in this paper is that drivers experience a perceptual-motor benefit from driving closer in fog that results in greater (or equivalent) safety and reduced driving demand. A computational car following model with an experimentally constructed perceptual module is introduced and used to demonstrate that under some conditions, closer following in fog is indeed beneficial because it effectively reduces drivers’ perceptual delay by a sufficient amount to improve controllability of the gap so much that the variability in THW reduces more than (or as much as) the adopted decrease in target THW.


  • English

Media Info

  • Media Type: CD-ROM
  • Features: Figures; Photos; References;
  • Pagination: 452-458
  • Monograph Title: Proceedings of the 4th International Driving Symposium on Human Factors in Driver Assessment, Training, and Vehicle Design, Stevenson, Washington, July 9-12, 2007

Subject/Index Terms

Filing Info

  • Accession Number: 01055469
  • Record Type: Publication
  • ISBN: 9780874141580
  • Files: TRIS
  • Created Date: Aug 20 2007 11:23AM