Intelligent Speed Adaptation for Involuntary Drivers – Final Results

The Danish Intelligent Speed Adaptation (ISA) trial ISA C included 26 commercial cars and 51 drivers a number of whom were involuntary. After a baseline period, ISA was activated for one year. The drivers should identify themselves with a personal key ID before driving. As well as being informative and warning, the ISA had an incentive in the form of rewards for speeding avoidance and social control - the latter, however, did not work sufficiently. When a key ID was used, the proportion of speeding was low while driving with ISA. Without key ID there was virtually no change in driving behavior regardless of ISA. Also, a statistical model showed that drivers sensitive to ISA sped significantly less in baseline than insensitive drivers. Moreover, on the basis of questionnaires it was found that drivers could be categorized as either green drivers (not positive to speeding) or red (more positive to speeding). A high correlation between the use of key ID, sensitivity to ISA, and the driver’s color was found: green drivers would use the key ID while red virtually never did. Hence ISA, as used in this trial, has virtually no effect on the driving behavior of involuntary drivers.

  • Supplemental Notes:
    • Abstract reprinted with permission from Intelligent Transportation Society of America.
  • Corporate Authors:

    ITS America

    1100 17th Street, NW, 12th Floor
    Washington, DC  United States  20036
  • Authors:
    • Agerholm, Niels
    • Tradisauskas, Nerius
    • Juhl, Jens
    • Berthelsen, Kasper
    • Lahrmann, Harry
  • Conference:
  • Publication Date: 2012


  • English

Media Info

  • Media Type: Digital/other
  • Features: CD-ROM; Figures; References; Tables;
  • Pagination: 12p
  • Monograph Title: 19th ITS World Congress, Vienna, Austria, 22 to 26 October 2012

Subject/Index Terms

Filing Info

  • Accession Number: 01499211
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 5 2013 9:41AM