Only in partial markets is it difficult to build a mainstream car.

With the advantage of coal resources, Inner Mongolia Autonomous Region has been in the forefront of economic growth in recent years. Coal transportation, as an important manifestation of the Inner Mongolia Autonomous Region's economic growth, has also been developing rapidly. As the main carrier of highway coal transportation, trailer has always been one of the main vehicles in Hubao-Ejin triangle area.

Earlier in Ordos saw many full-trailer coal trucks, but this type of car only in the coal mining site is more easily seen.

Only exist in local market

According to some domestic heavy truck enterprises and special vehicle enterprises, full trailer is not the mainstream model in the market. "This type of vehicle has long existed, and users want to load more goods." The relevant persons of CIMC Vehicle (South China) Sales Co., Ltd. said that if there is demand in the market, there are enterprises to meet. In fact, the whole trailer has not been able to enter the scope of announcement management. "I heard that in the market of Inner Mongolia, the purchase of vehicles only need to be filed locally to go on the road, there are also users apply the original license plate." According to a dealer in Ordos, most of these vehicles are not licensed.

"Full Trailer only exists in Xinjiang, Inner Mongolia and other areas with large demand for coal transportation, and can not be seen on the ordinary expressway. Therefore, the whole trailer is a local market type. Liu Keqiang, assistant general manager of Shaanxi Automobile Sales Company, said that looking at the whole country, all trailers only exist in some areas with loose policies. "This part of the region for trailer management is not strict enough, it is understood that most parts of the country do not allow full trailer operation on the road."

"It should be the local law enforcement environment is relatively relaxed. According to the state regulations, all trailers can no longer go on expressways. In the highway and logistics market, this type of vehicle is almost impossible to find. The person in charge of Zhongji Vehicle (South China) Sales Co., Ltd. said that the whole trailer sold well in the northern market in early years, but in recent years, sales have been shrinking, and some special-purpose vehicle manufacturers even quit the market.

"Users in the logistics industry also no longer choose full trailers." The person in charge of Zhongji Vehicle (South China) Sales Co., Ltd. said that the main reason is that the safety is too poor, easy to appear tail flick phenomenon. "I remember in 2008, there was a serious traffic accident in Guangdong, the cause is because the trailer tail flick, resulting in a number of pupils were killed by the collision." Those concerned said.

Major heavy haul rollover trailers are popular with customers.

Nevertheless, the demand for trailers in Inner Mongolia is still evident. Why on earth?

"Before the full trailer in the Northwest market performance is good, the main feature is that the turning radius is relatively small, relative to semi-trailer has an advantage." The person in charge of Zhongji Vehicle (South China) Sales Co., Ltd. told reporters that trailers are usually hung on trucks. "We also sell full trailers in the Northwest market, but in recent years sales are not big, mainly in the form of tractors plus semi-trailers." The responsible person said.

In addition, the relevant responsible person said that the trailer has another advantage, that is, the load is relatively high. The truck's container is almost 8 meters long, and the full trailer has 8 meters, which adds up to 16 meters. We can't find such a vehicle in semi trailer. " The relevant person in charge told reporters.

So, why are private car companies and users reluctant to choose this model, the market is gradually shrinking?

"Mainly poor safety, especially the transport of coal vehicles, the vehicle load is large, only rely on trucks and trailer workshop triangular hinge, easy to go wrong on the road." According to the relevant person in charge, on the tire loss, the full trailer is much higher than the semi-trailer. Because the truck also has to carry cargo, the load on the drive shaft is larger, the load on the drive shaft is larger, which directly leads to excessive tire consumption. The quality of skeleton cars is very important.

The load of all trailers is borne by itself and linked only to the main vehicle. The tractor does not need to bear the trailer load, but provides the power to help the trailer to overcome the road friction resistance. Semi-trailers need tractors to provide support points, tractors in addition to providing power, but also need to bear half of the trailer load. The person in charge of a special-purpose vehicle manufacturer said that in the course of use, it is also very difficult to reverse the full trailer, for example, it is very important to confirm the angle of the front and rear vehicles, to carefully observe the road conditions, to ensure that the direction of the right angle, for the return direction of the timing requirements are very high.