
| Auth | Authority | Jct | Junction |
|---|---|---|---|
| Ave | Avenue | Mi | Mile |
| AVI | Automatic Vehicle Identification | Mtn | Mountain |
| Brdg | Bridge | NHS | National Highway System |
| BC | British Columbia, Canada | NS | Nova Scotia, Canada |
| Cnty | County | ON | Ontario, Canada |
| Co | Company | Pkwy | Parkway |
| Com | Commission | Rd | Road |
| Const | Construction | Rdway | Roadway |
| Corp | Corporation | Sec | Section |
| Dept | Department | Serv | Service |
| Dev | Development | SH | State Highway |
| Dist | District | St | Street |
| Dr | Drive | Sys | System |
| Env | Environmental | TEA-21 | Transportation Equity Act for the 21st Century |
| ETC | Electronic Toll Collection | TIRIS | Texas Instruments Registration Identification System |
| Expway | Expressway | Traf | Traffic |
| Ext | Extension | Trans | Transportation |
| FHWA | Federal Highway Administration | Trnpke | Turnpike |
| Hazmat | Hazardous Materials | US | United States |
| Hwy | Highway | Veh | Vehicle |
| Id | Identification | Vet | Veteran |
| Internatl | International | 4R | Resurfacing, Restoring, Rehabilitation, Reconstruction |
| IS | Interstate System | ||
| ISTEA | Intermodal Surface Transportation Efficiency Act |