A refrigerated trailer is sometimes referred to as a refrigerated truck trailer or an ice trailer. Refrigerated trailers are large vans often used by manufacturers and distributors for hauling freight and finished goods in and out of warehouses and cold storage facilities. Refrigerated trailers feature a metal roof, a freezer compartment below the vehicle's roof, and a refrigerator on the front end. Refrigerated trailers also frequently have an emergency compartment that contains lighting, emergency instruments, water, and food supplies.