pavement markings

WA-RD 009.3A
Authors: 
Milan Krukar.
Originator: 
Washington State University
Publication Date: 
Wednesday, February 28, 1973
WA-RD 592.1
Authors: 
Jaime Kopf.
Originator: 
Washington State Transportation Center (TRAC)
Publication Date: 
Wednesday, September 1, 2004