The need for a systems theory approach to road safety |
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Authors: | Peter Larsson Sidney WA Dekker Claes Tingvall |
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Institution: | 1. Swedish Transport Agency, Box 267, SE-781 23 Borlänge, Sweden;2. Lund University, School of Aviation, Drottningvägen 5, SE-260 70 Ljungbyhed, Sweden;3. Swedish Road Administration, Röda Vägen 1, SE-781 87 Borlänge, Sweden |
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Abstract: | In other hazardous complex socio-technical systems in society, e.g. nuclear power and aviation, systems-theoretical assumptions are considered a promising way to better understand and manage safety. In this paper, two fundamental approaches to road safety were assessed in the light of a systems theory approach. One approach, is based on a premise where individual road-users are solely responsible when crashes occur. In that case countermeasures are aimed at altering the behavior of the road-user in order to adapt him/her to the road transport system. The other approach, the so-called zero-tolerance position, or Vision Zero approach, to road safety is built around two axioms; the system must be adapted to the psychological and physical conditions and limitations of the human being and the responsibility for road safety must be shared between the road-users and the designers and professional operators of the system. It was found that the most important determinants of systems theory are basically not present in the road-user approach. However, even if the Vision Zero approach clearly takes step towards systems theory, it does leave room for articulating even more features of systems theory. |
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