| Abbreviation | Definition |
|---|---|
| ROVO | Remote Operations Vehicle and Observatory |
| ROW | Right of Way |
| ROYL | Ride Of Your Life |
| RPA | Rotterdam Port Authority |
| RPEV | Road-Powered Electric Vehicle |
| RPEV | Roadway Powered Electric Vehicle |
| RPH | Remote Piloted Hexapod |
| RPI | Railway Progress Institute |
| RPK | Revenue Passenger Kilometers |
| RPM | Revenue Passenger Mile |
| RPM | Road and Performance Modifications |
| RPO | Railroad Post Office |
| RPP | Remotely Piloted Program |
| RPT | Reference Performance Test |
| RPTS | Regional Public Transportation Subcommittee |
| RPTS | Ryder Public Transportation Services |
| RPZ | Runway Protection Zone |
| RR | Railroad |
| RR | Railway Routes |
| RR | Ranch Road |