National Research Council (U.S.) Highway Research Board National Research Council (U.S.) Transportation Research Board 60 National Research Council (U.S.) Highway Research Board. Annual Meeting 50 American Association of State Highway Officials 41 United States Bureau of Public Roads 21 United States Federal Highway Administration 16 National Cooperative Highway Research Program 14 National Research Council (U.S.) Highway Research Board. Committee on Origin and Destination 7 National Academy of Engineering 5 National Research Council (U.S.) Highway Research Board. Meeting 5 National Research Council (U.S.) Highway Research Board. Special Committee on International Cooperative Activities 5 National Research Council (U.S.) Highway Research Information Service 5 American Association of State Highway and Transportation Officials 4 Irick, Paul E (Paul Eugene), 1918- 4 National Research Council (U.S.) Highway Research Board. Committee on Characteristics of Aggregates and Fillers for Bituminous Construction 4 National Research Council (U.S.) Highway Research Board. Committee on Characteristics of Traffic Flow 4 National Research Council (U.S.) Highway Research Board. Committee on Economic Forecasting 4 National Research Council (U.S.) Highway Research Board. Committee on Highway Engineering Economy 4 National Research Council (U.S.) Highway Research Board. Committee on Parking 4 National Research Council (U.S.) Highway Research Board. Committee on Roadside Development 4 National Research Council (U.S.) Highway Research Board. Committee on Transportation Programming, Planning and Evaluation 4 National Research Council (U.S.) Highway Research Board. Special Committee on Electronic Research in the Highway Field 4 Wilburn, Marianne Cox 4 Burggraf, Fred 3 Clark, Mildred 3 Copas, Thomas L 3 Highway Research Board 3 Levin, David R 3 Levin, David R (David Richard), 1913- 3 Miller-Warden Associates 3 see all ...