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On the consequences of behavioural adaptations in the cost-benefits analysis of road safety measures

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  • O. Gossner
  • P. Picard

Abstract

It is sometimes argued that road safety measures or automobile safety standards fail to save lives because safer highways or safer cars induce more dangerous driving. A similar but less extreme view is that ignoring the behavioral adaptation of drivers would bias the cost–benefit analysis of a traffic safety measure. This article derives cost–benefit rules for automobile safety regulation when drivers may adapt their risk‐taking behavior in response to changes in the quality of the road network. The focus is on the financial externalities induced by accidents because of the insurance system as well as on the consequences of drivers' risk aversion. We establish that road safety measures are Pareto improving if their monetary cost is lower than the difference between their (adjusted for risk aversion) direct welfare gain with unchanged behavior and the induced variation in insured losses due to drivers' behavioral adaptation. The article also shows how this rule can be extended to take other accident external costs into account.
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Suggested Citation

  • O. Gossner & P. Picard, 2000. "On the consequences of behavioural adaptations in the cost-benefits analysis of road safety measures," THEMA Working Papers 2000-30, THEMA (THéorie Economique, Modélisation et Applications), Université de Cergy-Pontoise.
    • Handle: RePEc:ema:worpap:2000-30
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    Cited by:

    1. Henrik Andersson & Nicolas Treich, 2011. "The Value of a Statistical Life," Chapters, in: André de Palma & Robin Lindsey & Emile Quinet & Roger Vickerman (ed.), A Handbook of Transport Economics, chapter 17, Edward Elgar Publishing.
    2. François Salanié & Nicolas Treich, 2020. "Public and private incentives for self-protection," The Geneva Risk and Insurance Review, Palgrave Macmillan;International Association for the Study of Insurance Economics (The Geneva Association), vol. 45(2), pages 104-113, September.
    3. Dementyeva, Maria & Verhoef, Erik T., 2016. "Miles, speed, and technology: Traffic safety under oligopolistic insurance," Transportation Research Part B: Methodological, Elsevier, vol. 86(C), pages 147-162.
    4. Hoy, Michael & Polborn, Mattias K., 2015. "The value of technology improvements in games with externalities: A fresh look at offsetting behavior," Journal of Public Economics, Elsevier, vol. 131(C), pages 12-20.
    5. Luis Rizzi, 2008. "Integrating Travel Delays, Road Safety, Care, Vehicle Insurance and Cost-Benefit Analysis of Road Capacity Expansion in a Unified Framework," Networks and Spatial Economics, Springer, vol. 8(2), pages 125-140, September.

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