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...

The first issue of ACCESS seems to have been well received, so we're pleased to continue these summaries of our research. Paralleling the spurt of work on new transportation technology, there's been renewed attention to institutional means for improving the nation's transport system. We focus...

Sustainability of transportation depends on both behavior and technology. Behavior determines how much of various activities are undertaken; technology determines whether they are harmful to the environment. Policies can influence both: they provide behavior incentives, and they affect...

This paper presents an empirical analysis of subcenter growth. We develop a series of hypotheses based on the theoretical concepts that have been proposed as explanations for the emergence and growth of subcenters. We then conduct tests of these hypotheses using 1970-80 data from the Los Angeles...

This article examines the role that economics can play in analysing problems with urban transportation in the United States. The specific problems addressed are failing infrastructure, financially weak public transit, environmental impacts of motor vehicles, motor-vehicle accidents, and traffic...