Roadway tolls are seeing increasing use in metropolitan areas worldwide, motivated first by increasing reliance on user fees to finance maintenance and expansion of transport infrastructure, and second by a strategy of reducing congestion externalities by discouraging car use in peak periods. In Scandinavia in particular, roadway tolls have been tested and permanently implemented in more cities than in any other region around the world. Despite the large body of evidence directly after these implementations, there remain several issues related to the effects of roadway tolls that are unexplored, not only in the Scandinavian cases but also abroad. This report documents the results of a research project intended to help fill these gaps. Our main contributions to the literature are in three broad areas: 1) travel adaptations patterns and their underlying explanations; 2) effects of tolling on location patterns and on telecommuting; and 3) explanations for the varying levels of acceptability of tolling schemes across time and in different locations.