As summer approaches, especially in the south, it rains are frequent. At this time, if you grasp some precautions for driving safety on rainy days, you can drive on the highway to avoid unnecessary accidents.
Try to choose the middle road, according to the "Highway Engineering Technical Standards", in the sharp bend will be set on the highway super high, the road surface to the bending center slightly inclined to provide centripetal force to the vehicle, even if not set super high, the ordinary road surface also has arches (the middle high and low on both sides), in the road to measure the curve or both sides will form water. Therefore, the best choice to avoid the waterlogged road surface in rainy days is to drive on the middle road, and if there is no middle road, you need to choose the left or right road according to the actual situation.
Do not exceed the critical water speed, when the road surface area water is too deep will form a water film, tires and the ground can not completely exclude the road surface water film, then the car will appear on the water film phenomenon, will cause the tire adhesion coefficient to drop sharply, resulting in a taxiing accident. In addition to the above-mentioned avoidance of passing through the waterlogged section, the speed needs to be reduced. Take the high-speed asphalt pavement wet and water conditions for example, its critical paddling speed for general household cars is about 100km/h, please put the vehicle speed to the critical paddling speed below such as 80km/h and 90km/h are relatively safe, of course, different vehicles have different speeds. At the same time, if water skiing occurs, remember to hit the steering wheel randomly, and hold the steering wheel with both hands without deviating.
Increasing the distance from the front car, the peak coefficient and sliding adhesion coefficient of the general tire in dry asphalt are 0.82 and 0.74, respectively, and when it encounters moisture, it will be reduced to 0.70 and 0.63, resulting in a great increase in the braking distance. In addition, when other vehicles pass through the water, splashes will occur, splashing water will seriously affect our driving vision and generate safety hazards, especially trucks and buses splashing water splashes are larger than heavy rain.
The correct use of lighting, rain and fog weather under different light penetration differences, of which fog lamp on rainy days the strongest average visibility of 171.6 meters, double flashing lamp average visibility of 158.5 meters. So if the line of sight is not good, please be sure to turn on the fog light.
In general, in the event of sudden rain on the highway, remember not to speed, use fog lights, and it is best to choose the middle lane to drive.