Using HAZOP for assessing road safety measures and new technology

The introduction of new technologies in traffic produces a range of unknown deviations in the desired traffic process. These developments require a renewal of the ex-ante assessment procedures for measures which will be implemented in the traffic system. In this paper the HAZOP methodology is applied to road traffic measures to provide scenarios based upon predicted deviations and problems with new, mainly in-vehicle technologics. To make HAZOP applicable for road safety purposes analysis of the expectations of road users is added to the traditional approach. In this paper some results are shown for speed reduction measures. Besides the results, their dependency on the membership of the HAZOP team is discussed.