This report analyzes approaches taken by state departments of transportation (DOTs), their local partners, and other project sponsors to satisfy National Environmental Policy Act (NEPA) requirements for transportation projects involving more than one mode. Specific objectives of the research were to: 1) characterize the challenges inherent in satisfying the NEPA requirements of multiple U.S. DOT agencies; 2) identify strategies and tactics that state and local transportation agencies have used to overcome these challenges; and 3) suggest new and innovative strategies that can be applied by state and local transportation agencies in future multimodal NEPA processes. Twelve case studies illustrate successful practices and provide examples of institutional arrangements used to comply with NEPA requirements for two or more U.S. DOT agencies. The case studies demonstrated that there is no single best way to approach the NEPA process for multimodal situations. Success may depend more on the willingness and motivation of the agencies to work together, to find common ground, and to work around differing processes, and less upon a specific organizational structure. An effective interagency approach depends on how well the project sponsor and other agencies are able to work together and bridge their procedural differences.

Congress created the National Surface Transportation Policy and Revenue Study Commission to examine "future surface transportation system needs, expected demographic and economic changes that will shape traffic demand, the future of the Interstate System, and the potential for expansion, upgrades, and other changes to the surface transportation system to meet the nation's needs." The Commission was directed to consult with representatives of State departments of transportation. This report is the first of six that AASHTO plans to provide to assist the Commission. It contains a comprehensive assessment of transportation needs today and in the future, and the demographic and economic changes that will shape that future.

With ever-increasing traffic demand and price of fossil fuels public transit becomes more popular transportation mode than ever before, especially in the fast growing regions such as Salt Lake City Metropolitan Region. Wasatch Front Regional Council (WFRC) (a local Metropolitan Planning Organization) incorporated several LRT and BRT projects in its long-term regional transportation plans of 2015 and 2030. After initial success of Light Rail Transit (LRT) and Bus Rapid Transit (BRT) deployments to alleviate traffic congestion, the Utah Transit Authority (UTA) has planned to expand these services. New LRT and BRT services introduced by the UTA will both increase spatial coverage and frequency of overall transit services in the region. However, this increase in public transit coverage and frequency will come at the expense of conflict in priority with vehicular traffic. Goal of this project is to evaluate impact of extended public transit services on vehicular traffic in the region in future years.

TRB's National Cooperative Highway Research Program (NCHRP) Research Results Digest 348: State Department of Transportation Role in the Implementation of Transportation Demand Management Programs explores examples of successful implementation and support of transportation demand management (TDM) programs by state departments of transportation (DOTs). The report is designed to be used as a primer for states to use in implementing TDM programs and includes a set of case studies, examining the range of ways that state DOTs encourage TDM services. Appendices A and B to NCHRP RRD 348 are available online: Appendix A - Specific Survey Responses; Appendix B - Interview Log.