Risk Perception and Demand for Risk Mitigation in Transport: A Comparison of Lay People, Politicians and Experts

This paper aims at examining risk perception, worry and demand for risk mitigation in transport and to compare judgements made by lay people, politicians and experts. The results are based on three questionnaire surveys carried out during autumn and winter 2004. The first study involved a representative sample of the Norwegian population (n = 1716), the second sample a group of Norwegian politicians (n = 146) and the third a group of experts on transport safety (n = 26). Studies carried out previously (Sjöberg, 1998a, 1999) have given support to the idea that consequences are more important for demands of risk mitigation than probability assessments. In the present study it is hypothesised that this may be because they are associated with worry and it is also proposed that worry relates more strongly to demands for risk mitigation than evaluation of consequences. The results of SEM-modelling showed that worry was a stronger and more significant predictor of demands for risk mitigation compared to consequences and worry mediated the effect of consequences. Probability assessment was a totally insignificant predictor. In accordance with previous studies, the results showed that experts demanded less risk reduction than lay people and politicians. The results indicate that this is because they stress the probability more than the other two groups.