National Research Council (U.S.) Highway Research Board National Research Council (U.S.) Transportation Research Board 72 American Association of State Highway Officials 56 National Research Council (U.S.) Highway Research Board. Annual Meeting 55 United States Bureau of Public Roads 34 National Cooperative Highway Research Program 27 United States Federal Highway Administration 22 National Research Council (U.S.) Highway Research Board. Meeting 11 National Research Council (U.S.) Highway Research Information Service 11 National Academy of Engineering 8 Levin, David R (David Richard), 1913- 7 National Research Council (U.S.) Highway Research Board. Committee on Origin and Destination 7 American Association of State Highway and Transportation Officials 6 Burggraf, Fred 6 Levin, David R 6 Markham, Marion 6 National Research Council (U.S.) Highway Research Board. Committee on Land Acquisition and Control of Highway Access and Adjacent Areas 6 Netherton, Ross De Witt, 1918-2010 6 Highway Research Board 5 Irick, Paul E (Paul Eugene), 1918- 5 National Research Council (U.S.) Division of Engineering and Industrial Research 5 National Research Council (U.S.) Highway Research Board. Committee on Flexible Pavement Design 5 National Research Council (U.S.) Highway Research Board. Committee on Parking 5 National Research Council (U.S.) Highway Research Board. Special Committee on International Cooperative Activities 5 Copas, Thomas L 4 National Academy of Sciences (U.S.) 4 National Research Council (U.S.) 4 National Research Council (U.S.) Committee on New Transportation Systems and Technology 4 National Research Council (U.S.) Committee on Socio-Economic Aspects of Highways 4 National Research Council (U.S.) Highway Research Board. Committee on Characteristics of Aggregates and Fillers for Bituminous Construction 4 see all ...