Perceptual factors and meanings of symbolic information elements
By: King M. Roberts, Ernest W. Lareau, Jr. and Daniel Welch ; Federal Highway Adminstration.
Contributors: Lareau, Ernest W.; Welch, Daniel.; United States. Federal Highway Administration.
Series: Report - Federal Highway Administration ; no. FHWA-RD-77-64; Report - Federal Highway Administration ; no. FHWA-RD-77-65
Publisher: Dept. of Transportation, Federal Highway Administration, Offices of Research and Development; for sale by the National Technical Information Service
Published: 1977
Place of publication: Washington; Springfield, Va
Language: eng
Subjects: Traffic signs and signals.; Road markings.
Notes: Cover title.

Final report, issued June 1977.

Bibliography: p. 71-72 (v.2).
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