Last update: 20/10/2004 14:52:59
This research is reviewing accident models suitable for use in the National Transport Model (NTM), and the new TUBA/COBA programs, using links as the basic unit. It is needed because accident frequencies were last calculated some 10 years ago and may not reflect current accident values.
The most widely used models for accident numbers are the trend based data used within COBA. These either model links and junction accidents seperately, or use in an all-inclusive link-based estimate. This project is split into two phases:
1. The first phase which has been completed, reviewed existing accident models in Great Britain and developed accident rates which have been used in National Transport Model (NTM).
2. The second phase is examining accident rates by time of day and trend factors, by road type. This phase also examines child KSI proportion and trend factors, by road type.
Crowthorne House, Nine Mile Ride, Wokingham, Berkshire, RG40 3GA
+44 (0)1344 773131
Cost to the Department: £19,308.00
Actual start date: 10 July 2001
Actual completion date: 31 December 2003