Study of the national standards for directional and other official signs, synthesis report
By: Thurman M. Mast.
Contributors: United States. Federal Highway Administration. Office of Research.; United States. Federal Highway Administration.
Series: Report - Federal Highway Administration ; no. FHWA-RD-75-116
Publisher: Dept. of Transportation, Federal Highway Administration ; Office of Research and Development; for sale by the the National Technical Information Service
Published: 1975
Place of publication: Washington; Springfield, Va
Language: eng
Number of pages: 29
Subjects: Traffic signs and signals -- Standards -- United States.
Notes: Cover title.

Final report issued Oct. 1975.

Bibliography: p. 24.