and Transportation Builders Association and past member of the Federal Advisory Committee on Ozone, PM, and Regional Haze. Ms. Berroyer was formerly a member of Governor George Ryan’s Balanced Growth Subcabinet and of the Regional Growth Strategies’ Task Force for the Northeastern Illinois Planning Commission. She currently serves on two panels of the National Cooperative Highway Research Program of TRB on the Economic Implications of Congestion and the Transportation Impacts of the National Ambient Air Quality Standards.


David S. Cordray is Professor of Public Policy and Professor of Psychology at Vanderbilt University. He is also Co-Director of the Center for Evaluation Research and Methodology at the Vanderbilt Institute for Public Policy Studies. Before joining the Vanderbilt faculty, he served as Assistant Director of the Division of Program Evaluation and Methodology at the U.S. General Accounting Office and as Associate Professor of Psychology at Northwestern University. Dr. Cordray has written extensively on evaluation methodology, primarily in the human services area. He is past president and past member of the Board of Directors of the American Evaluation Association and has served on several National Research Council (NRC) policy study committees.


Henry E. Dittmar is President of the Great American Station Foundation, a not-for-profit organization that promotes community economic development through the revitalization of railroad stations into centers of economic activity and intermodal transportation hubs. Mr. Dittmar remains a member of the Board of Directors of the Surface Transportation Policy Project (STPP), where he had served as Director, and most recently, as Director for Transportation and Quality of Life Campaign. The mission of STPP, a foundation-funded organization, is to ensure that transportation policy and investments help conserve energy, protect environmental and aesthetic quality, strengthen the economy, promote social equity, and make communities more livable. Before joining STPP, Mr. Dittmar was Manager of Legislation and Finance for the Metropolitan Transportation Commission in Oakland, California, and before that, Director of the



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