GPR

WA-RD 839.1
Authors: 
Ken Maser, Adam Carmichael.
Originator: 
Infrasense, Inc.
Publication Date: 
Friday, February 13, 2015
WA-RD 717.1
Authors: 
David G. Pollock, Kenneth J. Dupuis, Benjamin Lacour, Karl R. Olsen.
Originator: 
Washington State Transportation Center (TRAC)
Publication Date: 
Friday, December 19, 2008