Investigating Drivers’ Behaviour and Time Sacrifice under Social Routing Advices

Trip information and navigation systems are expected to become key components of future traffic management strategies, contributing to mitigate car usage externalities. In this study, we investigate social routing advices, which could be associated with nudges and delivered via a navigation app, aiming at promoting sustainable routing behaviour, where some drivers are asked to take longer routes and make travel time sacrifices (TTS) instead of minimizing per-sonal travel time. To investigate the impacts of various types of information strategies and social goals on drivers’ social routing behaviour, we present a stated choice experiment per-formed in two European cities, Amsterdam and Helsinki, and applied an ordered logit model. The results show that drivers are less inclined to make TTS for nudges related to liveability compared with other social goals. Regardless of the goal, almost 30% of drivers are willing to accept a social route that is 40% longer than the shortest route.