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[email protected]~m iiIDEZ&HP //... 0 HTHROIllCASiIG Officers HIGHWAY William L. Garrison, Chairman Jay W. Brown, First Vice Chairman Milton Pikarsky, Second Vice Chairman R E S E A R c i-i W. N. Carey, Jr., Executive Director B 0 A R D Executive Committee Frank C. Hemnger, Urban Mass Transportation Administrator (cx officio) 1 9 7 3 Henrik E. Stafseth, Executive Director, American Association • of State Highway and Transportation Officials (èx officio) • Norbert T. Tiemann, Federal Highway Administrator (ex officio) • Ernst Weber, Chairman, Division of Engineering, National Research Council (ex officio) Charles E. Shumate, Executive Director, Colorado Department of Highways (cx officio, Past Chairman, 1971) Alan M. Voorhees, President, Alan M. Voorhees and Associates, Inc. (cx officio, Past Chairman, 1972) Hendrik W. Bode, Gordon McKay Professor of Systems Engineering, Harvard University Jay W. Brown, Director of Rad.Operations, Florida Department of Transportation W. J. Burmeister, Consultant, Middleton, Wisconsin Douglas B. Fugate, Commissioner, Virginia Department of Highways William L. Garrison, Director, Institute of Transportation and Traffic Engineering, University of California, Berkeley Roger H. Gilman, Director of Planning and Development, The Port Authority of New York and New Jersey Neil V. Hakala, President, Esso Research and Engineering Company Robert N. Hunter, Chief Engineer, Missouri State Highway Commission George Kramb!es, Operating Manager, Chicago Transit Authority A. Scheffer Lang, Assistant to the President, Association of American Railroads Harold L. Michael, School of Civil Engineering, Purdue University D. Grant Mickle, President, Highway Users Federation for Safety and Mobility John T. Middleton, Consultant, Washington, D.C. James A. Moe, Director, California Department of Transportation • Elliott W.