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Driving with intelligent speed adaptation: Final results of the Belgian ISA-trial

Author

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  • Vlassenroot, Sven
  • Broekx, Steven
  • Mol, Johan De
  • Panis, Luc Int
  • Brijs, Tom
  • Wets, Geert

Abstract

In October 2002 the first ISA-trial in Belgium was started in Ghent. Thirty-four cars and three buses were equipped with the "active accelerator pedal". In this system a resistance in the accelerator is activated when the driver attempts to exceed the speed limit. If necessary, the driver can overrule the system. The main research goals of the trial in Ghent were to evaluate the effects of ISA on speed-change, traffic safety, drivers' attitude, behaviour and drivers' acceptance. To study these effects of the ISA-system both surveys and logged speed data were analyzed. In the surveys drivers noticed that the pedal assisted them well in upholding the speed limits and that the system increased driving comfort. Most important drawbacks were technical issues. Data analysis shows a reduction in the amount of speeding due to the ISA-system. There is however still a large remaining percentage of distance speeding, especially in low speed zones. Differences between drivers are large. For some drivers speeding even increases despite activation of the system. For less frequent speeders average driving speed almost always increases and for more frequent speeders average speed tends to decrease. With the system, less frequent speeders tend to accelerate faster towards the speed limit and drive exactly at the speed limit instead of safely below, which causes average speeds to go up.

Suggested Citation

  • Vlassenroot, Sven & Broekx, Steven & Mol, Johan De & Panis, Luc Int & Brijs, Tom & Wets, Geert, 2007. "Driving with intelligent speed adaptation: Final results of the Belgian ISA-trial," Transportation Research Part A: Policy and Practice, Elsevier, vol. 41(3), pages 267-279, March.
    • Handle: RePEc:eee:transa:v:41:y:2007:i:3:p:267-279
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    Cited by:

    1. Vandenbulcke, Grégory & Thomas, Isabelle & de Geus, Bas & Degraeuwe, Bart & Torfs, Rudi & Meeusen, Romain & Int Panis, Luc, 2009. "Mapping bicycle use and the risk of accidents for commuters who cycle to work in Belgium," Transport Policy, Elsevier, vol. 16(2), pages 77-87, March.
    2. van der Pas, J.W.G.M. & Kessels, J. & Vlassenroot, S.H. & van Wee, B., 2014. "The pros and cons of Intelligent Speed Adaptation as a restrictive measure for serious speed offenders," Transportation Research Part A: Policy and Practice, Elsevier, vol. 67(C), pages 158-174.
    3. Jan C Zoellick & Adelheid Kuhlmey & Liane Schenk & Stefan Blüher, 2021. "Method-oriented systematic review on the simple scale for acceptance measurement in advanced transport telematics," PLOS ONE, Public Library of Science, vol. 16(3), pages 1-25, March.

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