| Abbreviation | Definition |
|---|---|
| RSM | Revolution Speed Meter |
| RSP | Road Safety Patrol |
| RSPA | Research and Special Programs Administration |
| RSPV | Reinsurance Special Purpose Vehicle |
| RSQCM | Repair Station Quality Control Manual |
| RSRD | Republika Srpska Road Directorate |
| RSRD | Route Schedules Regulation Division |
| RSRT | Road Safety Remuneration Tribunal |
| RSS | Rail Security Service |
| RSS | Rail Surveillance Service |
| RSS | Really Safe Solution |
| RST | Risk and Safety in Transport |
| RST | Road and Sea Transport |
| RSTI | Rapid Speed Transportation Initiative |
| RSTP | Regional Strategic Transportation Planning |
| RSTP | Regional Surface Transportation Program |
| RSTU | Rostov State Transport University (Russian university) |
| RSU | Railway Services Unit |
| RSU | Runway Supervisory |
| RSV | Radar System Vehicle (RSV of COBRA.) |