Over the course of this century, public transit systems in the U.S. have lost most of the market share of metropolitan travel to private vehicles. The two principal markets that remain for public transit systems are downtown commuters and transit dependents - people who are too young, too old,...

For the average American, the overwhelmingly popular first choice in trip mode is to get into the private car at point A and drive it directly to point B. In the San Francisco Bay Area, for example, 82 percent of all work trips and 76 percent of all non-work trips are solo car trips. The total...

We have been collaborating in a panel study of commuter behavior in southern California which has been running since winter 1990. We were interested in setting up a panel so that we could study the dynamics of commuting behavior, especially in a situation where the environment was changing...

In the United States, federal funding for public transit often accounts for a large proportion of a local agency's budget, especially for capital investments. For this reason, local governments can be expected to plan a portfolio of projects that maximize federal contributions. This study...

Using two years of crash and average annual daily traffic data we examine the locations and conditions linked to truck-involved crashes (accidents). A binomial logit model is used to describe how the probability that a crash involves a truck is a function of the percentage of annual average...