| Abbreviation | Definition |
|---|---|
| RTAN | Road Traffic Act Notice |
| RTAP | Rural Technical Assistance Program |
| RTC | Regional Transportation Commission |
| RTC | Regional Transportation Committee |
| RTC | Regional Transportation Council |
| RTC | Rural Transportation Collaborative |
| RTCA | Radio Technical Commission for Aeronautics |
| RTCC | Regional Transportation Coordinating Councils |
| RTCC | Rural Transportation Coordinating Committee |
| RTCP | Reimbursement Transportation Cost Payment |
| RTD | Reason To Drive |
| RTD | Regional Transit District |
| RTEC | Residential Transportation Energy Consumption |
| RTECS | Residential Transportation Energy Consumption Survey |
| RTF | Ready To Fly |
| RTFM | Real-time Traffic Flow Measurement |
| RTFO | Renewable Transport Fuel Obligation |
| RTFP | Real-Time Flight Planner |
| RTG | River Tools Grid |
| RTG | Rodriguez Transportation Group |