Sign legibility for modified messages
Title:
Sign legibility for modified messages
Author:
Shepard, Frank D.
Personal Author:
Publication Information:
Charlottesville, Va. : Virginia Transportation Research Council, [1987]
Physical Description:
iii, 17 p. : ill. ; 28 cm.
Series:
VTRC ; 87-R33.
VTRC (Series) 87-R33.
General Note:
In cooperation with the Federal Highway Administration.
"July 1987."
Added Corporate Author: