informational load of highway guide signs.
Contributors: United States. Federal Highway Administration. Traffic Systems Division.
Publisher: Federal Highway Administration, Offices of Research & Development, Traffic Systems Division; National Technical Information Service [distributor]
Published: 1981
Place of publication: Washington, D.C; Springfield, Va
Language: eng
Number of pages: 34
Subjects: Traffic signs and signals -- United States.; Roads -- United States -- Accessories.; Human information processing.
Notes: Cover title.

"Final report."

"July 1981."

"Report no. FHWA/RD-80/161."

Bibliography: p. 33-34.