collision

WA-RD 742.1
Authors: 
Brad Manchas, Dave Olson.
Originator: 
Washington (State) Dept. of Transportation. Design Policy, Standards & Research Team
Publication Date: 
Thursday, December 31, 2009
WA-RD 048.1
Authors: 
Washington (State). Department of Transportation. Traffic Safety Section.
Originator: 
Washington (State). Department of Transportation. Public Transportation and Planning Division.
Publication Date: 
Friday, May 21, 1982