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The effect of nudges on the external costs of transport
Project funded by own resources
Project title The effect of nudges on the external costs of transport
Principal Investigator(s) Hintermann, Beat
Project Members Lustenberger, Nina
Götz, Alexander
Organisation / Research unit Departement Wirtschaftswissenschaften / Public Economics / Public Finance (Hintermann)
Project start 01.01.2021
Probable end 31.12.2023
Status Completed

This study is a randomized controlled trial to investigate the effect of recurring reports on total external costs in the mobility context. The study included 777 participants from Switzerland who tracked their mobility using a GPS tracker app. Results show that the reports reduced the total of measured external costs (including health, congestion, and climate externalities) by 2.0%, though this reduction was not statistically significant. Climate related costs that include CO2 emission reduced by 5.7%. Reports with positive feedback led to reductions in external costs, while negative feedback had a "boomerang effect" with participants generating even higher external costs. The effects of the treatment diminished over time, resulting in no significant long-term effects. Finally, the average participant values the received feedback between 0.62 and 2.42 Swiss francs per report.

Keywords Mobility, transport, external costs, RCT
Financed by University funds
Follow-up Project of... 4496364 Empirische Analyse des Mobilitätsverhaltens mit dynamischen Preisanreizen (MOBIS)

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