Traffic signal brightness
Subtitle: an examination of nighttime dimming.
Contributors: United States. Federal Highway Administration. Office of Research. Systems Technology Division.; Ketron, Inc.
Publisher: U.S. Dept. of Transportation, Federal Highway Administration; National Technical Information Service [distributor]
Published: 1985
Place of publication: McLean, Va; Springfield, Va
Language: eng
Number of pages: 17
Subjects: Brightness perception.; Color vision.; Automobile driving at night.; Traffic signs and signals.
Notes: Cover title.

"Performing organization: Ketron, Inc."--Tech. rept. doc. p.

Distributed to depository libraries in microfiche.

"August 1985."

"HRD-10/8-85(410)QE"--P. [4] of cover.

Bibliography: p. 17.

Summary report. July 1982-January 1985.

Federal Highway Administration, Office of Research--Systems Technology Division. DTFH61-82-C-00022. FCP no. 31A2052.