CAN mean a semi, a full on wheeler. It makes the trailer or container a temperature controlled unit. It is not only for cooling. It can heat as well or keep a constant temperature. The reefer should always remain running until the trailer is completely unloaded.
If a driver is asked to shut a reefer off before unloading is complete, the driver should have this noted and signed on the.
Definition: In trucking, a “reefer” is a refrigerated trailer that gets attached to a semi-truck in order to transport perishables and other temperature-sensitive goods. They generally measure between and feet inches in length and are designed to haul multiple LTL shipments within one run. A REEFER CONTAINER is a short form for REFRIGERATED CONTAINER.
The world of trucking includes a variety of trailers. One of the most common trailers used is a reefer trailer. Used to transport temperature-sensitive goods, reefer trailers are used throughout the transportation industry for their various capabilities. A refrigerator is a term used to refer to a truck, trailer or freight container that is equipped with a refrigerating unit for the transport of temperature-sensitive goods.