In this project, we analyse how different policy framings affect citizens' acceptance of urban tolls in two major European metropolitan areas: Paris-Ile de France and the Berlin-Brandenburg agglomeration. Furthermore, we investigate heterogeneity in views based on urban vs. suburban residence, trust in institutions and political views. To this end, we implement a large-scale survey of a total of 4000 urban and suburban households, representative for gender, education and age across the two metropolitan areas with the survey company respondi/bilendi. Within the survey, we randomize in-built video treatments to inform respondents of the tolls’ expected effects on (i) air pollution, (ii) time savings or (iii) greenhouse gas emissions. The effects of the treatment videos on support for an urban toll are compared to a control group, which receives a video with largely uninformative content. The research design allows testing a range of hypotheses with regards to the effects of the different treatments on policy support, including across different population groups (e.g. urban vs suburban, Berlin-Brandenburg vs Paris Ile de France) as well as hypotheses relating to interactions of these main hypothesized effects with several individual characteristics, such as political attitudes and mobility behavior.