| AASHTO |
American Association of State Highway and Transportation Officials |
| CEO |
Chief Executive Officer (of state Department of Transportation) |
| FHWA |
U.S. Federal Highway Administration |
| LTAP |
FHWA Local Transportation Assistance Program |
| NCHRP |
National Cooperative Highway Research Program |
| RAC |
AASHTO Research Advisory Committee |
| SCOR |
AASHTO Standing Committee on Research |
| SP&R |
State Planning and Research Funds, a proportion of the Federal Aid funding |
| TCRP |
Transit Cooperative Research Program |
| TIG |
AASHTO Technology Implementation Group |
| TRB |
Transportation Research Board |
| WSDOT RAC |
Washington State Department of Transportation Research Advisory Committees |
| REC |
Research Executive Committee |