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Government Accountability Office, Intelligent Transportation Systems: Improved DOT Collaboration and Communication Could Enhance the Use of Technology to Manage Congestion (GAO-12-308) (Mar. 19, 2012) (full-text).


Traffic congestion burdens the nation's quality of life and will likely grow substantially if current trends continue. Intelligent Transportation Systems (ITS) are a range of technologies that can reduce congestion at less cost than some other approaches. The U.S. Department of Transportation's (DOT) Research and Innovative Technology Administration (RITA) is responsible for promoting and supporting the use of ITS in coordination with other modal administrations, including the Federal Highway Administration (FHWA).

Since 1994, DOT has overseen the allocation and expenditure of more than $3 billion for deploying and researching ITS. GAO was asked to address (1) the current and emerging uses of ITS technologies by state and local governments, (2) the challenges these governments face in using ITS, and (3) the extent to which DOT's efforts to promote and support ITS address these challenges and follow leading practices.