Effectiveness of changeable message displays in advance of high-speed freeway lane closures

Bibliographic Details
Main Author:	Hanscom, Fred R.
Corporate Authors:	National Research Council (U.S.). Transportation Research Board, American Association of State Highway and Transportation Officials, United States. Federal Highway Administration
Format:	Book
Language:	English
Published:	Washington, D.C. Transportation Research Board, National Research Council [1981]
Series:	Report (National Cooperative Highway Research Program) 235.
Subjects:	Traffic signs and signals. Traffic safety.