Determinants of congestion pricing acceptability

We explore what variables influence public attitudes towards congestion charges using a survey carried out in Stockholm, Helsinki and Lyon, three European cities with many similarities but with different experiences and discourses with respect to congestion charging. We find that self-interest matters in the expected way, with lower support in groups with higher expected payments and lower value of travel time savings. However, self-interest variables only contribute 20-50% to total explained variation in attitudes. The rest is explained by differences in respondents’ attitudes to environment, trust in public agencies, and views about the fairness of pricing policies in general. What issues are associated to congestion charges are similar in all the cities, but the strength of the associations seems to vary depending on how congestion pricing is framed in the specific local discourse. The most important factor seems to be experience of congestion pricing, which increases support substantially.