Guidelines on the use and operation of changeable message signs /

Bibliographic Details

Main Author:	Dudek, Conrad L.
Corporate Authors:	Texas. Department of Transportation, Texas Transportation Institute
Format:	Book
Language:	English
Published:	College Station, Tex. : [Springfield, Va.] : Texas Transportation Institute, Texas A & M University ; [Available through the National Technical Information Service], [1992]
Edition:	[Rev. Nov. 1992].
Series:	Research report (Austin, Tex.) ; 1232-9.
Subjects:	Traffic signs and signals. Highway communications. Optical communications. variable message signs