Traffic congestion is a bane of modern city life. Transportation economists have long supported road pricing as a tool for controlling congestion and the idea is slowly coming into practice. This paper reviews the theory of congestion pricing and the relationship between optimal congestion tolls...

This paper provides an interpretive review of recent research, concentrating on three areas where new and important insights have been derived during the last years. We present the main ideas in a general unifying framework—there is somewhat more emphasis on a unifying analytical structure, as...