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July 2010 NATIONAL COOPERATIVE HIGHWAY RESEARCH PROGRAM Responsible Senior Program Officer: Gwen Chisholm-Smith Research Results Digest 348 STATE DEPARTMENT OF TRANSPORTATION ROLE IN THE IMPLEMENTATION OF TRANSPORTATION DEMAND MANAGEMENT PROGRAMS This digest presents the results of NCHRP Project 20-65 Task 24, "State Department of Transportation Role in the Implementation of Transporta- tion Demand Management Programs." The research was conducted by ICF International, Fairfax, Virginia. Kathleen Rooney and Michael Grant were the Principal Investigators. CHAPTER 1 BACKGROUND putting more emphasis on optimizing trans- portation system performance and imple- Transportation demand management menting near-term, cost-effective solutions (TDM) strategies have long played an im- portant role in helping commuters get to to "squeeze the most" out of our existing work and in improving air quality in metro- transportation system. Increased road ca- politan areas. TDM focuses on strategies to pacity may ease congestion temporarily, reduce congestion by shifting transporta- but this strategy is not a sustainable solu- tion demand to alternatives to single occu- tion to reducing congestion in the long-run. C O N T E N T S pancy vehicle (SOV) use, shifting travel Moreover, new infrastructure takes a long Chapter 1 Background, 1 out of the peak period, or shifting it to less time to plan and implement, and it is often Chapter 2 Summary of Research crowded facilities. disruptive to communities. Findings, 2 While we are accustomed to seeing local Managing travel demand offers the po- Survey Results, 2 Case Studies, 2 and regional jurisdictions actively promote tential to improve the efficiency of our trans- Chapter 3 Primer, 5 TDM strategies, current and emerging chal- portation system in ways that more rapidly What Is Transportation Demand lenges facing the transportation system are and cost-effectively address traffic conges- Management (TDM)?, 5 Why Should State DOTs Be putting more emphasis on the value of tion issues. In addition, TDM strategies Interested in TDM?, 5 What Are the Potential Roles of statewide efforts focused on TDM. Traffic offer the potential to address non-recurring State DOTs in TDM?, 6 congestion continues to challenge urban events, such as weather conditions (e.g., How Can State DOTs Organize Efforts to Advance TDM?, 9 areas of all sizes across the country. Accord- snow, ice, or rain); work zones; special What Are Some Implementation Steps or Tips for State DOTs?, 11 ing to the Texas Transportation Institute's events; and major incidents and emergen- Chapter 4 Survey Results, 13 Urban Mobility Study, congestion has in- cies, which are estimated by Federal High- Survey Responses, 14 creased in urban areas of all sizes over the way Administration (FHWA) to be respon- Chapter 5 Case Studies, 15 past 20 years, and with more roads expe- sible for over one-half of all traveler delay.2 Massachusetts Department of Transportation (MassDOT), 15 riencing congestion over more hours of The objective of this research task was New Jersey Department of the day.1 Limited transportation funding is to examine TDM programs nationwide to Transportation (NJDOT), 21 Georgia Department of Transportation (GDOT), 26 Utah Department of Transportation 1Texas Transportation Institute., Urban Mobility 2 Federal Highway Administration, Traffic Conges- (UDOT), 36 California Department of Report 2009, press release. tion and Reliability: Trends and Advanced Strategies Transportation (Caltrans), 43 ums/media_information/press_release.stm, accessed for Congestion Mitigation. Appendices A and B, 49 12/9/2009. congestion_report/chapter2.htm, accessed 12/7/2009.