Causes, consequences and countermeasures of overtaking accidents on two-lane rural roads

  • Published: Transportation Research Procedia 25: 2017, p 1989-2001
  • Authors: Richter, T., Ruhl, S., Ortlepp, J. & Bakaba, E.
  • Date Added: 08 Mar 2018
  • Last Update: 08 Mar 2018
  • Format: html


The aim of this project was to determine the infrastructural and traffic related variables which influence the occurrence and consequences of overtaking accidents as well as the overtaking behaviour of drivers.


The study comprises a literature review, a macroscopic analysis of accidents in 5 German federal states between 2007 and 2009 and a microscopic analysis on 50 road intersections.

Key Findings:

  • The analyses revealed that a large proportion of overtaking accidents occurs in areas with insufficient overtaking sights and where no configurations of traffic regulation have been taken to counter overtaking manoeuvres.

  • But the assumption that drivers can detect insufficient overtaking sights independently and therefore do not begin to overtake is wholly inadequate, because the complex weighting process of existing overtaking possibilities contains errors. Miscalculations of overtaking sights as well as speed and distance to oncoming vehicles are the main problem areas.

  • Missing configurations of traffic regulation can negatively warp the drivers’ perception.

  • Instead, the drivers must be supported in road sections with insufficient overtaking sights through operational measures in their task of driving.


Accident prevention; traffic safety; overtaking accidents; overtaking behaviour; rural roads