Drivers’ tendency to commit different aberrant driving behaviours in comparison with their perception of how often other drivers commit the same behaviours

  • Published: Wallén Warner, H. and Aberg, L. 2014
  • Authors: Wallén Warner, H. and Aberg, L.
  • Date Added: 07 Apr 2016
  • Last Update: 07 Apr 2016
  • Format: html


To examine the relationship between drivers self-reported on-road behaviours and the perception of other drivers’ behaviours.


Over 500 participants from Turkey and Sweden completed a questionnaire, including the Driving Behaviour Questionnaire (DBQ).

Key Findings:

  • Most participants reported engaging in the 28 driving behaviours (as measured by the DBQ) less often than other drivers.

  • The differences between perceptions of own versus other drivers’ likelihood of engaging in the behaviours was smaller for errors/ lapses than for aggressive and ordinary violations.

    • That is, drivers were more likely to think other drivers’ commit violations more frequently than them.


optimism bias


The study provides data for a commonly known road safety principle in a sample of Turkish and Swedish drivers.