Study into the causes and implications of accidents and incidents at roadworks

  • Published: TRL, 2000
  • Authors: M. Freeman, J. Geston and G. Coe
  • Date Added: 04 Feb 2013
  • Last Update: 04 Feb 2013


To identify factors associated with RTIs; to identify factors which affect highway capacity in the event of an RTI.


Video recording from CCTV at three road works sites yielded data on 91 RTIs and 539 breakdowns. Police personal injury RTI records were also obtained for two of the sites.Recovery operator’s logsheets (2611no.) were collected from major motorway works sites.Data was collated, coded and analysed.

Key findings:

  • Shunt type RTIs account for over half the RTIs in the video survey. Loss of control, driver misjudgement and lane changing were also common.

  • Common contributory factors were: driving too fast for conditions, driving too close, driving aggressively and driving without due care and attention.

  • Layout features commonly associated RTI locations included: approaches to lane closures, diverging lanes, entry slips and contra-flows.


Characteristics, road works, casualties


Although dated, this study gives characteristics of incidents at roadworks derived from a large pool of data.


Report not available online