Perceptual factors and meanings of symbolic information elements /

Bibliographic Details

Main Author:	Roberts, King M.
Corporate Author:	United States. Federal Highway Administration
Other Authors:	Lareau, Ernest W., Welch, Daniel
Format:	Government Document Book
Language:	English
Published:	Washington : Dept. of Transportation, Federal Highway Administration, Offices of Research and Development ; 1977.
Series:	Report - Federal Highway Administration ; no. FHWA-RD-77-64 Report - Federal Highway Administration ; no. FHWA-RD-77-65
Subjects:	Traffic signs and signals. Road markings.