| Abbreviation | Definition |
|---|---|
| TRANS | Transport |
| TRANSCAD | Transportation Computer Assisted Design |
| TRANSCOM | Transportation Operations Coordinating Committee |
| TRANSCOM | United States Transportation Command |
| TRANSP | Transportation |
| TRAP | Transportation Reporting Application Platform |
| TRAVIS | Transportation Routing and Vehicle Information System |
| TRB | Transportation Research Board |
| TRC | Track Recording Car |
| TRC | Transportation Research Center |
| TRC | Twin Rail Cavity |
| TRCL | Transportation Revenue Control Limit |
| TRD | Tired |
| TRD | Transit-Related Development |
| TRD | Travel Rage Disorder |
| TRE | Tardy Running Every |
| TRE | Timing Retard Eliminator |
| TREAD | Transportation Recall Enhancement Accountability And Documentation |
| TREC | Transportation Research and Education Center |
| TRED | Transportation Reaching Every Direction |