The heavy truck market will undergo major changes every two years: According to GB 7258-2017 "Technical Conditions for Motor Vehicle Operation Safety" (Stage C):
1. From January 1, 2019, current semi-trailers for transport of dangerous goods will be equipped with disc brakes (disc brakes).
2. Since January 1, 2020, the current production of panel type and grille type semi-trailer is equipped with disc brake (disc brake).
3. The rear axle of the dangerous goods transport truck with a total mass of more than or equal to 12000kg, all the dangerous goods transport semi-trailers, as well as the three-axle panel and grille semi-trailers should be equipped with air suspension.
After more than two years, people in the industry are extremely clear about their performance in the Semi Trailer price market. The general existence of chicken ribs, until now when it comes to experts, everyone's head hurts.
The implementation of the 921 Current policy in 2016 has been called "the most strict regulation of excess in history". The implementation of the 921 Current policy not only affected the overloading and excess control in various places, but also boosted the sales of commercial vehicles, even hitting the highest sales volume of heavy trucks in history in 2017, which has a self-evident impact on the entire freight industry. That reform can be said to be positive and successful for the freight market.
In the past two years, the reform from the bow piece to the airbag semi trailer, the country's five countries six car replacements! The epidemic lockdown directly drove the freight market into the trough. Truck drivers are struggling, in the market impact again and again appear powerless. Back to the point: the air bag semi-trailer must be combined with the tractor equipped with hydraulic retarder to provide safety protection for the driver when driving. Some trailer manufacturers have irresponsibly told consumers that their products can be equipped with hydraulic retarder without tractors, and consumers have chosen to trust the manufacturer's boasting.
How about an airbag semi? The answer is certainly excellent, but compared with the current depressed freight market, ordinary practitioners must not be able to bear. First of all, if you want to use an air bag semi trailer, you must have a corresponding configuration of the locomotive, and the market locomotive with hydraulic retarder is not enough, most people still can not use it! Due to the withdrawal of the original trailer, leading to the second-hand trailer, but also severely affected the survival and development of the trailer manufacturers.
Each reform has its advantages and disadvantages. It can be seen that the reform is not successful because of the downturn in the freight market. If the old and current trailer models are allowed to exist, it should be positive and also give the majority of truck practitioners more and better choices.