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TravInfo is a two-year test of advanced traveler information systems for the San Francisco Bay Area. TravInfo's hub for data collection, processing, and dissemination of timely and accurate traveler information to both the public and private sectors is the Traveler Information Center. The operation and performance of the Traveler Information Center provides the basis for subsequent potential benefits to both the public and private sectors. Data is accessed by the public sector through the Traveler Advisory Telephone System, a telephone hotline, and by the private sector via modems through the Landline Data System. Human operators of the Traveler Information Center play a crucial role in its performance and subsequent delivery of potential benefits.

Highway automation technologies have been proposed in an attempt to ameliorate the urban problem of congestion and, to a lesser extent, air pollution. The methodology developed to analyze the impacts of an automated highway system in the Southern California region in 2025 is addressed in this paper. An automated highway system scenario is selected from several alternatives based on sensitivity analyses that allow for variability in network location, total network miles, and market penetration of vehicles equipped with automation features.