Transportation authorities have consistently failed to employ economic incentives on major roadways--i.e. time-of-day pricing or "congestion fees"--to internalize the costs of congestion. In principle at least, such tolls can easily be shown to increase social welfare by making motorists pay...

We have completed a survey of Southern California residents designed to examine whether the details of policy design can make congestion pricing more attractive to the motoring public. A congestion fee proposal is often regarded as simply a tax increase; also, especially in the US, motorists...

Accelerated vehicle-retirement programs are currently being examined as one way to reduce hydrocarbon emissions. Forecasting participation rates in these programs is one of the major areas of uncertainty because the number of participants and their characteristics are likely to vary with the...