| Subject | English | Thesaurus |
| abbr., astronaut., mil. | Advanced Space Transportation Program | ASTP |
| agric., abbr. | Agricultural Industries Transportation Services | AITS |
| agric., abbr. | Agriculture Industry Transportation Services | AITS |
| USA | Department of Energy National Transportation Program | NTP |
| abbr., mil., BrE | Director-General of Transportation Services | DGTN |
| tradem., abbr. | Exel Transportation Services, Inc. | ETSI |
| abbr., astronaut. | Future European Space Transportation Investigation Programme | FESTIP |
| transp., abbr. | Ground Transportation Services | GTS |
| Nasdaq, abbr. | J. B. Hunt Transportation Services, Inc. | JBHT |
| transp., abbr. | Joint University Program for Air Transportation | JUP |
| Nasdaq, abbr. | K L L M Transportation Services, Inc. | KLLM |
| railw., abbr. | Marine Transportation Services Sea- Barge Group | SBGU |
| railw., abbr. | Merchants Despatch Transportation Company | MDTX |
| railw., abbr. | Merchants Despatch Transportation Corporation | NRBX |
| ed., abbr. | National Association of State Directors of Pupil Transportation Services | NASDPTS |
| USA | Qualified Transportation Benefits Program | QTB |
| railw., abbr. | Rail Transportation Services Incorporated | RTSX |
| railw., abbr. | Rocky Mountain Transportation Services | RTRX |
| railw., abbr. | Rocky Mountain Transportation Services | ROCX |
| railw., abbr. | Rocky Mountain Transportation Services | MTNX |
| railw., abbr. | Rocky Mountain Transportation Services | BTRX |
| railw., abbr. | San Francisco Transportation Services Company Incorporated | SFSX |
| transp., abbr. | Statewide Transportation Improvements Program | STIP |
| transp., abbr. | Surface Transportation Program | STP |
| transp., abbr. | Transportation Incentive Program | TIP |
| transp., abbr. | Transportation Management Program | TMP |
| railw., abbr. | Transportation Management Services Incorporated | NERX |
| transp., abbr. | Transportation Reimbursement And Information Program | TRIP |
| transp., abbr. | Transportation Research Information Services | TRIS |
| transp., abbr. | Unified Transportation Assistance Program | UTAP (US) |
| abbr. | Wilson County Transportation Services | WCTS |
| railw., abbr. | WWIB Transportation Services | WWBX |
