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Judgments of mean speed and predictions of route choice

  • Ola Svenson
  • Gabriella Eriksson
  • Ilkka Salo
  • Ellen Peters
Publiceringsår: 2011
Språk: Engelska
Sidor: 504-511
Publikation/Tidskrift/Serie: Transportation Research. Part F: Traffic Psychology and Behaviour
Volym: 14
Nummer: 6
Dokumenttyp: Artikel i tidskrift
Förlag: Elsevier


How are driving speeds integrated when speeds vary along a route? In a first study, we examined heuristic processes used in judgments of mean speed when the mean speeds on parts of the trip varied. The judgments deviated systematically from objective mean speeds because the distances driven at different speeds were given more weight than travel time spent on the different distances. The second study showed that when there was a 10-15 min pause during a travel the effect on the mean speed decrease was underestimated for driving speeds of 90 km/h and higher. In the third study, the objective mean speeds and the subjective biased mean speed judgments were used to predict choices between routes with different speed limits. The results showed that subjective judgments predicted decisions to maximize mean speed significantly better than objective mean speeds. Finally, some applied and basic research implications of the results were discussed. (C) 2011 Elsevier Ltd. All rights reserved.


  • Psychology
  • Speed
  • Mean speed
  • Judged mean speed
  • Route choice
  • Driving
  • Traffic
  • safety


  • ISSN: 1369-8478

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