Glossary of Terms
There are 74 entries in this glossary.R
| Term | Definition |
|---|---|
| Reefer |
A refrigerated and insulated box trailer. |
| Regional |
A driver or carrier who transports cargo in a limited geographical area, usually within a certain radius of one's own home or company terminal, and may or may not maintain a schedule. |
| Retarder |
An engine brake is a system used primarily on semi-trucks or other large vehicles that modifies engine valve operation to use engine compression to slow the vehicle. They are also known as compression release engine brakes. The driver controls consist of an on/off switch and, sometimes, a multi-position switch that controls the number of cylinders on which the brake is active. When the compression release engine brake is turned on, it will activate when the driver releases the accelerator. |
| Rocky Mountain Double |
A combination vehicle consisting of a tractor, a 45 to 48 foot semitrailer and a 28 foot semitrailer. |