A dump trailer is a type of trailer equipped with a self dumping device, usually consisting of a tractor and a tow truck. The self dumping device allows the trailer carriage to tilt and lift, automatically unloading materials without the need for manual unloading, greatly improving unloading efficiency. This type of trailer is widely used in various situations that require frequent loading and unloading of goods, such as construction sites, mines, agriculture, and other fields.

Travel trailers cannot operate on their own and must rely on other vehicles for towing. This means that travelers need to find a suitable parking spot for the trailer and consider how to arrange the towing vehicle's journey after arriving at the destination.

The appearance of travel trailers usually presents shapes such as rectangular, quasi rectangular, teardrop shaped, or elliptical. Its volume is moderate, which can meet the living space needs of a family and can also be easily dragged by a family car. This type of RV is particularly popular in the United States and is a classic model among trailer RVs.

Travel trailer is a type of trailer camper, also known as trailer A-type camper or traditional trailer camper. This type of RV requires other motor vehicles (such as sedans, SUVs, or self-propelled RVs) to tow. Travel trailers typically have areas such as living rooms, kitchens, bedrooms, and bathrooms, providing travelers with a multifunctional temporary accommodation environment.

A semi-trailer is a type of truck that consists of a tractor and a trailer. A tractor is a commercial vehicle equipped with a special device for towing a trailer, which is partially placed on the tractor. This structure deprives the semi-trailer of its own driving force and requires the use of traction pins to connect to the towing vehicle, relying on the driving force of the main vehicle to achieve driving. Semi trailer trucks are commonly used for transporting bulk goods such as sand, stones, steel, etc., because they have a large cargo carrying capacity and flexible transportation methods.