| Abbreviation | Definition |
|---|---|
| CRS | Child Restraint Systems |
| CRS | Computer Reservation System |
| CRS | Computerized Reservation System |
| CRSS | Crash Report Sampling System |
| CRST | Caution Real Slow Truck |
| CRST | Cedar Rapids Steel Transportation |
| CRT | Croton- Harmon Station (MNRR-AMTK) |
| CRTN | Calculation of Road Traffic Noise |
| CRTS | Coal Resource Transportation System |
| CRTT | Center for Research in Transportation Technologies |
| CRTT | Centre for Research in Transportation Technologies |
| CRU | Combination Roll Up |
| CRV | Civic-Recreational Vehicle |
| CRV | Comfortable Runabout Vehicle |
| CRV | Compact Recreational Vehicle |
| CRV | Compact Revolution Vehicle |
| CRW | Canard Rotor Wing |
| CS | Charging System |
| CSA | Customs Self-Assessment |
| CSAH | County State Aid Highway |