THE PERCEPTION OF MANOEUVRES OF MOVING VEHICLES. PROGRESS REPORT VI. IMPLICATIONSS OF PSYCHOPHYSICAL THRESHOLD MEASUREMENTS FOR THE NIGHT DRIVING SITUATION

After a review of the principal results contained in the previous reports in this series a generalized equation is derived which expresses threshold speed in depth for relative movement as a function of observation distance and observation duration. On the basis of this equation calculations are then made to yield values of two important temporal parameters in car-following, viz, 'time until collision' and 'free time'. It is shown that there are circumstances in which these parameters take values which are too short for the driver to escape a collision after he has detected that he is closing on a lead vehicle. Suggestions to improve the car-following situation, in human factors terms, are presented.

• Supplemental Notes:
  • This project was sponsored by the Institute for Road Safety Research SWOV, Voorburg.
• Corporate Authors:

  TNO INSTITUTE FOR PERCEPTION

  KAMPWEG 5, PO BOX 23
  SOESTERBERG,   Netherlands  3769 ZG
• Authors:
  • Janssen, W H
• Publication Date: 1974

Media Info

• Features: Figures; References;
• Pagination: 22 p.

Subject/Index Terms

• TRT Terms: Drivers; Equations; Human factors; Motion; Motor vehicles; Reaction time; Speed
• Uncontrolled Terms: Driver reaction; Moving vehicles
• Subject Areas: Highways; Safety and Human Factors;

Filing Info

• Accession Number: 00098804
• Record Type: Publication
• Source Agency: Highway Safety Research Institute
• Report/Paper Numbers: IZF 1974-C12 Final Rpt.
• Files: TRIS
• Created Date: Oct 18 1975 12:00AM