Abstract
The important role which alcohol plays in road crashes and the effectiveness of drink-driving measures in reducing road trauma is well accepted. It seems logical to assume that medicinal and illicit drugs which seem to similarly reduce performance of driving-related tasks will also increase the risk of crash involvement of their users. Using the model for road safety related alcohol counter-measure development, road crash countermeasures which can legitimately proceed in the current level of knowledge and policy development relating to drugs and driving have been identified.