A 4 axle fence cargo truck trailer is a specialized type of trailer designed for transporting various types of cargo, particularly those that need to be secured and protected during transit. The sides of the fence cargo truck trailer are typically constructed with a fence or railing system. This design allows for easy loading and unloading while providing support for securing cargo with straps or nets. The fence helps to prevent cargo from shifting during transit and can accommodate various load sizes and shapes.

A "fence type semi-trailer," also known as a "fence cargo semi-trailer," is a type of semi-trailer with a fence-like structure on the sides and potentially the rear. These trailers are commonly used for transporting bulk cargo, dry goods, livestock, and other items that require a degree of containment or protection from the elements. They are often preferred for their flexible loading capacity, lighter tare weight, and ability to handle various cargo types, including items like sand, bags, poultry, and even containers with the addition of a container turn lock, according to FengYuan Equipment.

A vehicle transport semi-trailer is a heavy-duty trailer used to transport goods. Its axle is located behind the center of gravity of the vehicle and it travels on the power of the tractor. Semi-trailers usually consist of three axles and come in a variety of types, including 11-meter barn semi-trailers, 13-meter barn semi-trailers, and low-bed semi-trailers.

A curtain side trailer, also known as a curtain van or Tautliner, is a semi-trailer designed to combine the features of a flatbed and a dry van. It has a rigid frame, a headboard, a rigid rear door (or doors), and canvas curtains on the sides that can be retracted. This design allows for easy loading and unloading from the sides or rear while also protecting cargo from the elements when the curtains are in place.