This paper discusses the economics of three environmental and energy issues in transport: local air pollution, energy supply and climate change. The focus is on road transport as the dominant transport mode. The application of the main environmental instruments is briefly discussed for local air...

We extend the traditional road investment model, with its focus on capacity and congestion as measures of capital and its utilization, to include free-flow speed as another dimension of capital. This has practical importance because one can view free-flow speed as a continuous proxy for road...

After decades of study, the value of travel time remains incompletely understood and ripe for further theoretical and empirical investigation. Research has revealed many regularities and connections between willingness to pay for time savings and other economic factors including time of day...