| Abbreviation | Definition |
|---|---|
| TPS | Transportation and Parking Services |
| TPS | Transportation Protective Service |
| TPSIS | Transportation Planning Support Information System |
| TPTG | Transportation Program Task Group |
| TPTG | Transportation Program Technical Group |
| TPTO | Transportation Planning and Traffic Operations |
| TPUS | Transportation and Public Utilities Service |
| TPW | Transportation and Public Works |
| TPWG | Transit Providers Working Group |
| TQA | Transportation Quality Assurance |
| TQV | Technology Qualification Vehicle |
| TQW | The Qantas Way |
| TR | Three Rails |
| TR | Transportation Research |
| TR | Turn Red |
| TRAC | Transportation Review Advisory Council |
| TRACE | Tracey Ross Aussie Chess Engine |
| TRACS | Transportation Routing And Control System |
| TRADE | Transportation Resources to Aid the Disadvantaged and Elderly |
| TRAIL | Transportation Recreation Alternatives In Louisiana |