Anya A. Carroll
Thomas M. Newton
James Morgan
United States. Federal Railroad Administration
Unknown Author
Daniel B. Fambro
United States. Department of Transportation. Research and Special Programs Administration
Oregon. State Highway Dept.
United States. Congress. House. Committee on Transportation and Infrastructure. Subcommittee on Railroads
Jordan Multer
Connecticut. Bureau of Highways.
Montana. State Highway Commission. Planning Survey Division
Yoassry M. Elzohairy