Author
- National Research Council (U.S.). Transportation Research Board 6 results
- United States. Federal Highway Administration 3 results
- American Association of State Highway and Transportation Officials 2 results
- National Research Council (U.S.). Highway Research Board 2 results
- American Association of State Highway Officials 1 results
- Bellows, William C. 1 results
- Colorado. Division of Transportation Planning 1 results
- Kiljan, John 1 results
- Markow, Michael J. 1 results
- National Cooperative Highway Research Program 1 results
- North Carolina. Division of Highways 1 results
- United States. Federal Highway Administration. Implementation Division 1 results