A random parameters probit model of urban and rural intersection crashes

  • Published: Accident, analysis and prevention, 84, 38-40. (2015)
  • Authors: Tay, R.
  • Date Added: 05 Apr 2016
  • Last Update: 05 Apr 2016
  • Format: html


Aimed to compare the characteristics of urban and rural intersection crashes.


Used a random parameters probit model to analyse the intersection crashes that occurred in Alberta, Canada between 2008 and 2012.

Key Findings:

  • Results showed that accidents at rural intersections were more likely to result in fatalities (2.1% of accidents compared with 0.2% at urban intersections) and injuries (33.1% compared with 22.1% at urban intersections).

  • They were also more likely to occur on roads with higher speed limits.

  • Similarly, a number of road features had an impact on the accident rates in rural environments.

  • In rural environments 10.5% of accidents occurred on curved roads compared with 6.1% in urban environments.

  • Similarly, 16.7% of rural accidents occurred at special facilities (such as bridges and tunnels) compared with 3.3% of accidents on urban roads.

  • In addition, run-off-road crashes were more frequent at rural intersections, representing 22.6% of accidents compared with 6.3% at urban intersections.  


Intersections, intersection crashes, rural and urban intersections


The reason for the increased injury and fatality rate could be attributed to the increased response time for emergency services to attend the scene of the crash. This increased response time is due to the lower traffic in rural areas which could increase the notification time as well as the increased distance to reach the crash locations.