quality

WA-RD 409.1
Authors: 
James F. McManus, Nathalie A. Phillip, John F. Stanton, George M. Turkiyyah.
Originator: 
Washington State Transportation Center (TRAC)
Publication Date: 
Wednesday, May 1, 1996
WA-RD 454.1
Authors: 
Phillip S. Dunston, Fred L. Mannering.
Originator: 
Washington State Transportation Center (TRAC)
Publication Date: 
Tuesday, December 1, 1998