This technical guide has been developed to help address the problems local authority engineers have in addressing accidents on rural roads including how to prioritise between sites with the same or (low) accident frequencies, how to justify and go about rural accident analysis and how best to identify and incorporate non-site-specific strategies into remedial programmes. The guide provides a synopsis of the accident problems on rural roads in Great Britain and a step by step accident analysis technique that is based on rural roads "Investigatory levels" above which it is recommended that treatment should be considered. Some of these "Investigatory levels" relate to Vulnerable Road Users. A worked example to explain the methodology is provided along with blank tables (paper and electronic versions) to help road safety engineers carry out their own analyses.


Please note that the ARRIL software is no longer available – ARRIL used the 1994/5 GB national accident data on rural roads for comparison with data input for a road or area of the users choice. This means that the comparison data is now over 15 years old, and therefore not a suitable comparison, as the national data will also have changed in this time period.
The method described in PPR026 for analysing accidents on a route or within an area by comparing with national data, or investigatory levels, using the suggested accident, vehicle and casualty types remains a valid method, but the national and local data used should cover a similar period.

Want to know more about this project?