IMPLICATIONS OF INTELLIGENT TRANSPORTATION SYSTEMS FOR METROPOLITAN FORM

Abstract

The potential role of “intelligent transportation systems” (ITS) in influencing metropolitan form and household behavior is reviewed. First, a portrait is drawn of the broad economic, social, and political forces that are expected to govern the evolution of urban settlement and transportation. Next, three ITS technologies are evaluated. Traveler information systems will logically increase the efficiency of driving and be a force for continued decentralization, although impacts will be modest. Congestion pricing is contentious: although it clearly can make a difference in travel behavior, it is very unpopular, raises serious ethical concerns, and will not necessarily support the goals of a more compact city. Advanced public transit systems are designed to make transit more effective and attractive; although they may raise transit use, the shift is unlikely to be great enough to influence urban form and travel behavior. We therefore conclude that intelligent transportation systems are a significant extension of the basic logic of the automobile rather than a means to effect any fundamental transformation of the American city.

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