AUTHOR
United States. Federal Highway Administration
4
American Association of State Highway and Transportation Officials
3
Lottman, Robert P.
2
American Associationm of State Highway and Transportation Officials
1
Anderson, D. A. 1936-
1
Antle, Charles E.
1
Barksdale, Richard D.
1
Luhr, David Robert
1
Lytton, Robert L.
1
National Research Council (U.S.). Highway Research Board
1
National Research Council (U.S.). Transportation Research Board
1
National Research Council (U.S.). Transportation Research Board. Committee on Instrumentation Principles and Applications
1