| Abbreviation | Definition |
|---|---|
| ITN | Independent Transportation Network |
| ITN | International Transportation Network |
| ITO | Hilo International Airport |
| ITO | Installation Transportation Office |
| ITO | Installation Transportation Officer |
| ITOS | International Tug of Opportunity System |
| ITOW | On-line TOWing Insustry forum |
| ITPN | Industrial Transportation Property Network |
| ITR | Insane Trail Riders |
| ITR | Intelligent Traffic Regulations |
| ITR | ITinerary Receipt |
| ITRCC | Illinois Traffic Records Coordinating Committee |
| ITS | Institute of Transportation Studies |
| ITS | Intelligent Traffic System |
| ITS | Intelligent Transportation Society |
| ITS | Intelligent Transportation System |
| ITS | Intelligent Transportation Systems |
| ITSM | Intelligent Transportation Systems Magazine |
| ITSO | Integrated Transport Smartcard Organisation |
| ITSP | Inter-regional Transportation Strategic Plan |