roughness

WA-RD 372.1
Authors: 
A.T. Papagiannakis, M.S. Gujarathi.
Originator: 
Washington State Transportation Center (TRAC)
Publication Date: 
Friday, June 30, 1995
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 588.2
Authors: 
Jianhua Li, Stephen T. Muench, Joe P. Mahoney, Linda M. Pierce, Nadarajah Sivaneswaran.
Originator: 
Washington State Transportation Center (TRAC)
Publication Date: 
Saturday, July 1, 2006