Traffic conflictsi a measure of road safety.

Traffic accidents are the best-known measure for gaugingroad safety in both rural and residential areas. Hoorever,attempts to estimate the relative safety of locations areusually problematic because of the unreliability of acci-dent records and the time required to accumulate adequatesample sizes. Hence the Traffic Conflicts Technique (TCT)was developed to measure traffic hazards at particular si-tes. In practice, hoorever, the use of traffic conflicts asa measure of safety gives rise to a number of problems.Results of reliability and validity studies are presented.