Definition of RV: According to GB/T 3730. 1-2006.5438+0, the history of RV originated from RV. There are three categories and nine models of RV. . Self-propelled type A, B, C, A, B, C, D, A and B mobile villas. Self-propelled Type A RV is the most luxurious and comfortable RV, which is mostly used for long-distance travel. In layman's terms, it can be called a bus. It is 8~ 15 meters long. For example, Jinlong's self-propelled B RV can meet the basic needs of life and entertainment, and it is small and flexible. Most of the indoor furniture is panel furniture, which is very strong and suitable for short-distance travel, business negotiation and business reception. Generally speaking, it is a van, 4~6 meters long. Self-propelled C RV is between A and B, with complete facilities and sliding cabin to expand the internal space. Represented by Zhongtian, the general off-road RV is of this type, and Zhao Benshan's car is the self-propelled C RV. This kind of RV is usually 5~9 meters. .

Trailer-Type A RV is a trailer, which is a type of traditional American RV. Most of them are mid-axle trailers, which are towed by the passenger cars in front. Trailing type B RV is called five-wheeled trailer in America and semi-trailer in China. It is towed in front by a tractor, such as a light truck. One feature of this RV is that a step will be formed above the tractor to place things like beds and form a bedroom space. Both ends of trailer-type C RV can be unfolded to form a collapsible tent RV, which shrinks when moving, and the space can become very large when parking in the camp. It is a seasonal RV and usually stops for a long time. Trailer D RV is commonly known as humpback RV, and mobile villas A and B are different in stability time and seasonality.