| Abbreviation | Definition |
|---|---|
| TLD | Transportation Logistics and Distribution |
| TLDR | Transit Low Density Residential |
| TLF | The Lead Footed |
| TLM | Total Lube Management |
| TLMA | Transportation Land Management Agency |
| TLN | Transportation Learning Network |
| TLOF | Touchdown Lift-Off Surface |
| TLOS | Transit Level Of Service |
| TLR | Transmission Load Reduction |
| TLR | Transmission Loading Relief |
| TLR | Transportation Librarians Roundtable |
| TLRC | Transportation Legislation Review Committee |
| TLS | Transportation Layer Security |
| TLS | Truck Load Services |
| TLT | Transportation Lead Time |
| TLU | Trailer Locating Unit |
| TLUC | Transportation and Land Use Coalition |
| TLUC | Transportation and Land Use Committee |
| TLZ | The Loading Zone |
| TM | To The MaxiMUM |