What are the effects of bad weather conditions on safe driving?

The moisture contained in fog, especially the water vapor in dense fog, has a certain wetting effect on the road surface, which reduces the friction coefficient of the road surface to a certain extent and increases the braking distance of the vehicle. In addition, another important reason why fog affects traffic safety is that it reduces the visibility when driving, seriously interferes with the driver's access to road information and the distance between cars, thus affecting the driver's driving behavior and easily causing traffic accidents.

2. The impact of rainfall on traffic safety

Rain not only affects the visibility when driving, but also reduces the friction coefficient of the road surface, making the road surface slippery and greatly increasing the braking distance, which undoubtedly increases the driving risk and the possibility of traffic accidents. In different grades of rainfall, the damage coefficient of light rain is very high, even exceeding the damage degree of heavy rain. The reason is that light rain has little effect on the vision when driving, and drivers are easy to relax their vigilance. But light rain can wet the dust on the road and become a good lubricant. When an emergency happens, the braking distance of emergency braking increases, which leads to traffic accidents and becomes the main mode of some road traffic accidents in rainy days.

3. The impact of snowfall on traffic safety.

Compared with precipitation, snowfall has a more serious impact on traffic safety. Snowfall will freeze after being crushed by wheels, which greatly reduces the friction coefficient of the ground, the grip and braking ability of wheels, and it is easy to cause rollover, rear-end collision and serial collision accidents when braking in an emergency [2]. In addition, in snowy days, it is difficult to start automatically, especially on uphill sections, and it is easy to slide backwards and collide with the rear car. In addition, snowfall will cover up the original potholes or obstacles on the road surface, which will bring great safety hazards to driving safety.

4. The influence of freezing on traffic safety

The main forms of icing are road ice, thin ice, ice mound and ice cone. It is mainly caused by snowfall or temperature change, which poses a great threat to traffic safety. In the case of icing, it is difficult for vehicles to drive, and emergency braking is easy to lock up. In addition, freezing will seriously affect the quality of pavement and easily lead to problems such as pavement cracking and bagging. When it freezes and melts, it will break through the subgrade and overflow along the road, posing a serious threat to traffic safety; Severe freezing will make the subgrade sink, even lead to landslides and other problems, which will affect the driving safety.