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Why do (or don't) people carpool for long distance trips? A discrete choice experiment in France

Abstract : Long-distance carpooling is an emerging mode in France and Europe, but little is known about monetary values of this mode attributes in transport economics. We conducted a discrete choice experiment to identify and measure the values of attributes of long-distance transport modes for a trip as a driver and as a passenger, with a special focus on carpooling. Around 1.700 French individuals have been surveyed. We use discrete mixed logit models to estimate the probability of mode choice. We find that the value of travel time for a driver who carpools is on average 13% higher than the value of travel time when driving alone in his/her car. The average value of travel time for a carpool trip as passenger is around 26 euros per hour, 60% higher than for a train trip and 20% higher than for a bus trip. Moreover, our study confirms a strong preference for driving solo over taking carpoolers in one's car. We also show that individuals traveling as carpool passenger incur a "discomfort" cost of on average 4.5 euros per extra passenger in the same vehicle. Finally, we identify robust socioeconomic effects affecting the probability of carpooling, especially gender effects. When they drive a car, females are less likely to carpool than male, but they prefer to carpool two passengers over only one passenger.
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https://hal.archives-ouvertes.fr/hal-02121589
Contributor : Guillaume Monchambert <>
Submitted on : Tuesday, July 28, 2020 - 5:09:14 PM
Last modification on : Monday, October 19, 2020 - 10:52:14 AM

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Guillaume Monchambert. Why do (or don't) people carpool for long distance trips? A discrete choice experiment in France. Transportation Research Part A: Policy and Practice, Elsevier, 2020, 132, pp.911-931. ⟨10.1016/j.tra.2019.12.033⟩. ⟨hal-02121589v2⟩

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