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WA-RD 371.3
Authors: 
Andrew Finney.
Originator: 
Washington State Transportation Center (TRAC)
Publication Date: 
Tuesday, June 30, 1998
WA-RD 371.2
Authors: 
Todd W. Wentworth.
Originator: 
Washington State Transportation Center (TRAC)
Publication Date: 
Tuesday, June 30, 1998
WA-RD 371.1
Authors: 
Sunirmal Banerjee, Andrew Finney, Todd Wentworth, Mahalingam Bahiradhan.
Originator: 
Washington State Transportation Center (TRAC)
Publication Date: 
Tuesday, June 30, 1998
WA-RD 257.1
Authors: 
Tony M. Allen, B.R. Christopher, R.D. Holtz.
Originator: 
Washington (State). Dept. of Transportation.
Publication Date: 
Sunday, March 1, 1992
WA-RD 522.2
Authors: 
Tony M. Allen, Richard J. Bathurst.
Originator: 
Washington State Transportation Center (TRAC)
Publication Date: 
Monday, December 1, 2003
WA-RD 528.1
Authors: 
Tony M. Allen, Richard J. Bathurst.
Originator: 
Washington State Transportation Center (TRAC)
Publication Date: 
Saturday, December 1, 2001