Cost and safety effectiveness of highway design elements

Manylion Llyfryddiaeth
Awduron Corfforaethol:	Roy Jorgensen Associates, National Research Council (U.S.). Transportation Research Board, American Association of State Highway and Transportation Officials, United States. Federal Highway Administration
Fformat:	Llyfr
Iaith:	English
Cyhoeddwyd:	Washington, D.C. Transportation Research Board, National Research Council 1978.
Cyfres:	Report (National Cooperative Highway Research Program) 197.
Pynciau:	Express highways > United States > Safety measures > Cost effectiveness. Traffic accidents > United States > Costs. Express highways > United States > Design and construction.