Starting in the mid-1960's, US government policy encouraged the public takeover and subsidy of what had been a self-supporting, privately owned transit industry. The combination of public ownership and subsidy halted the long-term decline in ridership, but it also led to the growth of an...

Reducing emissions of pollutants from cars requires that new vehicles be designed and built to pollute less, and also requires some ongoing inspection and maintenance programme to ensure that a vehicle's operation conforms to those design standards. This paper focuses on these programmes,...

Our current alarm about traffic congestion stems in large part from perception of trends: thirty years ago traffic flowed smoothly; today it crawls. If this trend continues, congestion will become gridlock. These perceptions lead to statements such as: "There is no point to building highways,...

Road pricing is widely advocated as a solution to congestion problems. The underlying theory is well developed, and we even have the technology to implement it without toll booths. Only political barriers remain. Decision makers are reluctant to retrofit tolls on existing highways because they...

With this first issue of Access, we at the University of California Transportation Center seek to introduce our research to a diverse community of readers. By presenting our findings in a nontechnical format, we hope to make them accessible to professionals in various fields and to citizens who...

In this issue of ACCESS, we examine how land use considerations can improve transportation planning. Transportation planners have traditionally sought to maximize mobility by supplying better roads and common carriers, thus making it easier to move around. Seldom have they sought to improve the...