In this study, a control stick with a built-in kinesthetic-tactile display was mounted in a 1965 Plymouth sedan, and several car-following experiments were conducted. Data collected consisted of lead and following car velocity histories, headway variance, velocity variance, and subjective driver opinion. Describing-function models obtained from the velocity historeis were used to compare various tested systems on the basis of speed of driver-vehicle system response and platoon stability. The headway and velocity variance data were used to compare tracking behavior while the subjective data provides a relative measure of both driver effort and driver preference. In the most advanced driver-vehicle system considered, compensation was included to reduce the effects of variation in vehicle response, to dynamically adjust tracking distance to a safe headway (as one portional to vehicle speed), and to partially unburden the driver by allowing the vehicle to automatically respond to any sudden changes in lead-car speed. This last system resulted in system time constants of less than one second, in headway deviations from the desired headway of less than one foot, and in little driver effort. Further, the individual driver-vehicle system responses were such that a platoon of such vehicles would be asymptotically stable. /Author/

  • Supplemental Notes:
    • Research sponsored by Ohio Dept. of Highways and FHWA. Presented in Sumposium on Psychological Aspects of Driver Behavior, Vol. 2-Applied Research.
  • Corporate Authors:

    Road Safety Research Foundation

    P.O. Box 71, Deernsstraat 1
    Voorburg 2110,   Netherlands 
  • Authors:
    • Fenton, R E
    • Rule, R G
  • Publication Date: 1971-8

Media Info

  • Features: Figures; References;
  • Pagination: 20 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00099572
  • Record Type: Publication
  • Source Agency: National Safety Council Safety Research Info Serv
  • Files: TRIS
  • Created Date: Nov 5 1975 12:00AM