Safe driving guidance system in fog area of expressway

1.3 The intelligent guidance anti-collision system in the fog area of the expressway is an intelligent all-weather unattended system. The system integrates equipment such as weather monitoring, intelligent light beacon, sound and light alarm, traffic information display screen, etc., and is often used in dangerous road sections ( Especially in the fog area), it can effectively solve the dangerous road traffic safety problem.

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Dangerous road sections such as curved roads, long slopes, tunnel entrances and exits are prone to serious traffic accidents under severe weather conditions such as fog, rain and snow. Studies have shown that no matter what the climate and road conditions, the core cause of accidents is that drivers cannot understand road information in advance, are negligent, and drive improperly (such as driving too fast). In the past, the prevention of traffic accidents on dangerous road sections mainly relied on static facilities such as reflective road signs, guidance signs and warning signs, with limited effects. In view of the impact of low-visibility weather such as fog, rain, snow, etc. on vehicle traffic, safe driving in foggy areas, and anti-fog guidance intelligent systems ensure driving safety. The company puts forward the advanced safety concept of "prevention first, protection combined, active guidance, passive protection", and has developed the "fog zone intelligent induction collision avoidance system", which makes up for the shortcomings of traditional safety guidance systems and can meet heavy fog. Under severe weather conditions, there are two requirements for vehicle speed limitation and safety distance limitation, reducing the impact of low-visibility weather such as foggy weather on vehicle traffic, and improving road safety. 1.2 Risks of safe driving in high-speed fog areas 1.2.1 Fog areas are likely to cause vehicles to rear-end in the fog area. The visibility is low. Drivers cannot see the situation ahead and around. It is not easy to grasp the judgment and control of the distance between vehicles, and many drivers Having developed the habit of speeding on the highway, relying solely on the driver’s vision and intuition cannot ensure driving safety. If the conditions of road vehicles can be automatically detected, the following vehicles can be warned in time when the distance between the vehicles ahead is too close, and the driver can be urged to slow down, so as to avoid vehicle rear-end incidents as much as possible. 1.2.2 The content of the fog area is not easy for vehicles to identify the outline of the road. From the perspective of the road analysis, the visibility of foggy weather is low, the lane line is blurred, and the driver cannot see the outline of the road ahead, markings and various traffic signs, and it is easy to drive out of the road boundary. , Especially in the detour section. 1.2.3 Secondary accidents that are prone to continuous rear-end collisions in the fog area. Once a traffic accident occurs in the fog area, the accidentally parked vehicle in the middle of the road will become a dangerous obstacle. Car rear-end collision accidents, so we often encounter continuous rear-end collisions in foggy areas. 1.3 The intelligent guidance anti-collision system in the fog area of the expressway is an intelligent all-weather unattended system. The system integrates equipment such as weather monitoring, intelligent light beacon, sound and light alarm, traffic information display screen, etc., and is often used in dangerous road sections ( Especially in the fog area), it can effectively solve the dangerous road traffic safety problem.