Refrigerated trucks, or reefer trucks as they are known in the trucking industry, play a vital role in the supply chain.
Reefers keep perishable commodities at controlled temperatures to prevent heat and bacteria from ruining them. There are some highly specialized refrigeration units that reportedly go as low as minus 85.
Reefers haul mostly food and pharmaceuticals — everything from fresh produce to frozen meats, medicine to medical plasma. Sometimes reefers pick up boxed fresh citrus or...