Several recent articles criticize urban rail transit investments on grounds that they are ineffective at reducing traffic congestion and financially wasteful. This commentary challenges that view. It summarizes some of the findings of more detailed analyses of transit benefits and suggests that...

This article compares four potential transportation energy conservation strategies using a comprehensive evaluation framework that takes into account how each strategy affects annual vehicle travel, and therefore, mileage-related impacts such as traffic congestion, road and parking facility...

Various transportation policies can help conserve energy and reduce pollution emissions. Some, called cleaner vehicle strategies in this article, reduce emission rates per vehicle-kilometer. Others, called mobility management (also called transportation demand management) strategies, reduce...

Housing affordability is an important policy goal. However, housing is not truly affordable if located in an inaccessible area with high transportation costs. Increasing the supply of affordable housing in accessible locations helps achieve multiple planning objectives: it reduces transportation...

There is growing interest in sustainability, sustainable development, and sustainable transportation. This paper identifies issues related to the definition, evaluation and implementation of sustainable transportation. Significant issues include the range of definitions of sustainability, the...

There is growing interest in sustainability, sustainable development, and sustainable transportation. This paper identifies issues related to the definition, evaluation and implementation of sustainable transportation. Significant issues include the range of definitions of sustainability, the...

This paper describes the Online TDM Encyclopedia, a unique new Internet resource to help transportation professionals identify, evaluate and implement innovative mobility management strategies. It is available free at www.vtpi.org. The Encyclopedia contains detailed information on more than...