| Abbreviation | Definition |
|---|---|
| TDI | Transportation Disadvantage Index |
| TDI | Turbo Diesel I |
| TDI | Turbo Diesel Injection |
| TDI | Turbo Direct Inject |
| TDI | Turbo Direct Injection |
| TDI | Turbocharged Direct Injection |
| TDL | Transportation Development Levy |
| TDL | Transportation Distribution And Logistics |
| TDLS | Tower Data - Link Services |
| TDM | Theft Deterrent Module |
| TDM | Transportation Demand Management |
| TDM | Travel Demand Model |
| TDMP | Transportation Demand Management Plan |
| TDMS | Traffic Data Management System |
| TDMS | Transportation Demand Management Strategies |
| TDMV | Texas Department of Motor Vehicles |
| TDMV | True Dual Mode Vehicle |
| TDOT | Tennessee Department of Transportation |
| TDOT | Texas Department of Transportation |
| TDOT | Tucson Department of Transportation |