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What drives people to carpool? Explaining carpooling intention from the perspectives of carpooling passengers and drivers

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Author Bachmann Friedel, Hanimann Anina, Artho Jürg, Jonas Klaus,
Project Hype or Promise? The Contribution of Collaborative Consumption to Saving Energy
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Original article (peer-reviewed)

Journal Transportation Research Part F: Traffic Psychology and Behaviour
Volume (Issue) 59
Page(s) 260 - 268
Title of proceedings Transportation Research Part F: Traffic Psychology and Behaviour
DOI 10.1016/j.trf.2018.08.022


The negative impact of motorized private mobility on the environment can be decreased successfully by encouraging more people to carpool. From a psychological perspective, only little is known about the determinants of carpooling. Therefore, this study investigated car- pooling behavior based on a theoretical background that integrates (1) the theory of planned behavior, (2) the norm activation model, and (3) dispositional trust. Additionally, we studied carpooling from two separate perspectives: Passengers sharing rides, and the drivers offering rides. We conducted a survey with a representative sample of 342 participants in Switzerland. The results showed that for both, passengers and dri- vers, normative aspects such as descriptive and personal norms, in combination with per- ceived behavioral control predicted carpooling intention. Attitude toward carpooling behavior, however, did not have any predictive power regarding carpooling intention, nei- ther for passengers nor drivers. Dispositional trust displayed an indirect effect on intention to carpool as a passenger or driver via perceived behavioral control. Based on these results, we discuss practical implications for designing measures to promote carpooling success- fully in the future.