Urban structure is increasingly characterized by decentralization, dispersion, and multiple employment centers. Much is known empirically about such patterns, and about how the interplay between agglomerative and dispersive forces generates spatial structures that are complex and prone to...

We present a simulation model designed to determine the impact on congestion of policies for dealing with travel time uncertainty. The model combines a supply side model of congestion delay with a discrete choice econometric demand model that predicts scheduling choices for morning commute...

Some road-pricing demonstrations use “value pricing,†in which travelers can choose between a free but congested roadway and a priced roadway. Recent research has uncovered a potentially serious problem for such demonstrations, second-best tolls may be far lower than those typically...

Traffic congestion is a disruptive fact of urban life. It inflicts delays and frustrations in virtually all major cities in the world, new or old, rich or poor. Although many countermeasures have been tried, it is hard to name a city in which there is much satisfaction with the existing state of...