Characteristics of disheveled double trailer semi-trailer
- Structure: modular, modular and detachable
It’s not about ‘ordinary semi-trailer towing an extra section’, but rather the tractor+semi-trailer+center axle trailer/semi-trailer being connected in series step by step through the traction saddle. The key is detachable: when needed, two sections can be hung to improve loading, and when empty or scheduled, the hanging can be switched, which is much more flexible than the integrated ultra long vehicle. - Efficiency: One time boost, significant cost reduction
-A bicycle can transport 2 20 foot containers (or a combination of 20 feet and 40 feet)
-Significant increase in loading capacity: Taking the Qihongyan double trailer train as an example, the maximum total weight is 60 tons (about 22.5% higher than ordinary freight cars), the maximum compartment volume is about 141.5 m ³, and the loading capacity is increased by about 64.8%
-Energy and carbon reduction: Scania’s twin trailer test estimates a CO2 reduction of over 20% and a reduction of approximately 50% in accident risk due to the merger of vehicles - Safety: Backed by structure and intelligent systems
The safety of long trains does not depend on how long they are, but on the layout of the central axle, the steerable bridge, the overall braking system, as well as intelligent assistance systems such as 360 ° surround view, DMS fatigue warning, lane keeping (LKA), and predictive adaptive cruise control (PACC) to compensate for driving difficulties. - Right of way: Size exceeds the norm, limited to pilot projects in China
The total length of the vehicle is commonly about 25 meters, far exceeding the 18.1-meter limit line of the “Regulations on the Management of Overlimit Transport Vehicles Driving on Highways”; The pilot limits are mostly for the total weight of vehicles and goods ≤ 74t, the number of axles ≤ 9, and the total length of vehicles and goods ≤ 22 meters (such as Baotou with 9 axles and Ganzhou with 74t/22m). Therefore, currently it can only operate legally on approved fixed pilot routes, and is prohibited on ordinary road networks.
