Optimum congestion pricing in a complex network

Road tolls are a well established way of dealing with problems of congestion. Over recent years, the literature has expanded to take account of how congestion charges might interact with imperfections in other markets. In this paper, we consider the case where congestion occurs within a complex road network, with congestion on multiple links. To derive a truly optimal toll, account must be taken of the entire network. As a case study, we take a stylised version of the road network in Bergen, Norway.