• Is the impact of transport modes on health an individual determinant of transport mode choices? with R. Rejeb, H. Bouscasse and S. Mathy

In this article, we evaluate the extent to which information on the impact of mode choice on public or individual health influences our mobility. In other words, does knowing that taking the car increases the risk of developing cardiovascular diseases for the user, through lack of physical activity, and for her co-citizens, through air pollution, has an influence on the choice of alternative modes to the car? We address this question collecting original data in the Grenoble metropolitan area (France) and implementing a Discrete Choice Experiment. Respondents were presented different scenarios varying depending on mode (car, public transport and cycling), travel time, travel cost and associated cardiovascular risk. We find that information on health risks related both to air pollution and to lack of physical activity influence participants modal choice's intentions. Willingness-to-pay to reduce the individual risk is equal to 0.85€ per trip made by public transport for a risk reduction of 2 percentage points while the corresponding WTP to reduce population risk range between 0.80€ and 1.29€ depending on the share of the population also adopting alternative modes to the car. Similar WTP are found for the bicycle. Given the current modal share, our results indicate that decision makers could play on both the individual and public health impact of modal choices to encourage citizens to reduce car usage.