roadways

WA-RD 538.1
Authors: 
Kevan Shafizadeh, Fred Mannering, Linda Pierce.
Originator: 
Washington State Transportation Center (TRAC)
Publication Date: 
Saturday, June 1, 2002
WA-RD 540.1
Authors: 
Ken Casavant, Paul Sorensen, Bob Chase.
Originator: 
Washington State Transportation Center (TRAC)
Publication Date: 
Tuesday, May 1, 2007