Intelligent vehicle-highway systems (IVHS) have the potential to improve the performance of the Nation's transportation system. These technologies apply to all transportation modes that use streets and highways. This report, called for in Section 6054(d) of the Intermodal Surface Transportation Efficiency Act of 1991, discusses whether nontechnical and institutional factors raise substantial barriers to the development and deployment of IVHS in the United States. The report is based upon results of research studies and comments from members of the IVHS community, State and local governments, universities, private parties, and public interest groups.