... Transporting Hazardous Materials, aquot; Report No. FHWA-IP-80-15, Federal Highway Administration, Washington, D.C., November 1980. (Report is available from the Superintendent of Documents, U.S. Government Printing Office, Washington, D.C. 20402. ... (61 John Hitz and Mary Cross, aquot;Rail-Highway Crossing Resource Allocation Procedure Usera#39;s Guide, aquot; Report No. FHWA-IP-82- 7, Federal Highwayanbsp;...