The expressway has the characteristics of fast speed, large flow, full closure, full interchange, etc. It is required that the vehicle shall not slow down and stop arbitrarily. However, once foggy weather occurs on the highway, the road visibility is reduced, which not only reduces the driver’s visual recognition ability, but also causes the driver’s psychological fatigue, easy judgment and operation errors, and then leads to serious traffic accidents involving multiple vehicles rear-end collisions.
Aiming at highway fog accidents, the fog area safety monitoring system has been paid more and more attention. Among them, the roadside high-brightness light as the road contour indication subsystem can effectively induce traffic flow in foggy weather.
The high-speed fog light is the driving safety induction device on the foggy highway. The control strategy of the high-speed fog light:
The high-speed fog light control strategy determines the luminous brightness distribution of fog lights in the fog area of the expressway in different spaces and times, which is the basis for the setting of exposed lights. The high-speed light control strategy mainly selects the flashing mode and control mode of high-speed fog lights according to the traffic flow and road alignment.
1. The way the light flashes
Random flickering: Each light flashes according to its own stroboscopic method.
Simultaneous flashing: All lights flash at the same frequency and at the same interval.
It is recommended to use random flickering method, and simultaneous flickering control method can be adopted in the road section that needs road landscape.
2. Control method
Determine the brightness and flashing frequency of the fog lights according to different visibility and different fog area positions, so that the power supply cost in the later period is lower, so as to save energy and save energy to achieve the purpose of optimal driving guidance.
Post time: Jun-17-2022
