Refrigerated transport vehicles and dry vans are specialized vehicles designed for the transportation of perishable goods, such as food and pharmaceuticals, that require temperature-controlled environments to maintain their quality and safety.

Refrigerated transport vehicles, also known as reefer trucks or refrigerated trucks, are equipped with a built-in refrigeration system that provides temperature control for the cargo area. These vehicles can maintain temperatures ranging from -20°C to 20°C, depending on the specific needs of the cargo.

Dry vans, on the other hand, are non-refrigerated cargo trailers designed for the transportation of dry goods. These trailers are typically made of aluminum or steel and are designed to protect the cargo from the elements during transportation.

To maintain the temperature-controlled environment required for the transportation of perishable goods, dry vans can be equipped with insulation and climate control systems that maintain the cargo within a specific temperature range. These types of trailers are called "insulated vans" or "insulated trailers."

Both refrigerated transport vehicles and dry vans come in a variety of sizes and configurations to suit different cargo and transportation needs. Some specialized vehicles, such as "reefer containers," are also used for intermodal transportation of refrigerated cargo, such as shipping containers that can be transported by truck, train, or ship.

Overall, refrigerated transport vehicles and dry vans are essential for the safe and efficient transportation of perishable goods, helping to maintain their quality and safety throughout the supply chain.