refrigerated vehicle; reefer truck; refrigerator car
General term for a vehicle with a refrigerated cargo area, including trucks and train cars.
Transport fresh food in a refrigerated truck.
冷蔵車 is a refrigerated vehicle (often for chilled, not frozen goods), while 冷凍車 specifically implies freezing temperatures.
Compound of 冷凍 (freezing) + 車 (vehicle).