n the traffic accident prone areas of roads, speed bumps are often paved to prompt and help drivers to slow down and reduce traffic accidents. The deceleration belt is generally plastic deceleration belt or cem
2022/03/08 HuanLi
1. The color of warning slogans of traffic signs is generally yellow as the background color, and inlaid with black edges or black pictures. The collision is generally an equilateral triangle with the top angle facing upward.
2022/03/08 HuanLi
First of all, we should pay attention to the selection of materials. For the electric telescopic door suitable for cold weather, we should appropriately increase the hardness just now, and the change of expansion coefficient is not ea
2022/03/08 HuanLi
With the acceleration of urbanization, the guidance information of urban roads is more complex than that of highways, and the intersection spacing is shorter than that of highways. Obviously,
2022/03/08 HuanLi
Gate is a kind of mechanical hardware, which mainly includes three roller gate, swing gate, wing gate, translation gate, full height rotary gate and other channel equipment; Access control refers to the access control system software
2022/03/08 HuanLi
Vehicle sensors can be selected, so that it has the functions of "automatic brake dropping", "anti smashing" or "automatic lever lifting after brake flushing". With abundant bottom co
2022/03/08 HuanLi
Anhui dynamic construction of railway investment 114:
2022/03/07
Dali autonomous development and reform commission, western yunnan railway co., LTD. :
2022/03/07