| Abbreviation | Definition |
|---|---|
| RCO | Remote Communications Outlet |
| RCOC | Remote Control of Outdoor Circuits |
| RCOC | Road Commission for Oakland County |
| RCPT | Richland Center Public Transportation |
| RCR | Runway Condition Reading |
| RCRA | Resource Conservation and Recovery Act |
| RCT | Rural Community Transportation |
| RCTC | Riverside County Transportation Commission |
| RCTD | Riverside County Transportation Department |
| RCV | Refuse Collection Vehicle |
| RD | Rear Drag |
| RD | Road |
| RD | Road Dog |
| RD | Rolling Demo |
| RDA | Riders Driving Around |
| RDA | Riding For Disabled Association |
| RDB | Rear Disc Brakes |
| RDDMI | Radio Digital Distance Magnetic Indicator |
| RDF | Refuse Derived Fuel |
| RDIM | Road Death Investigation Manual |