There are many factors driving insecurity in rainy and foggy weather, and accidents happen frequently. In order to effectively prevent agricultural vehicle accidents, the author combines the work experience in recent years to start with the causes of vehicle accidents in the rain and fog climate and discuss some countermeasures.
First, the main cause of car accidents
(1) Visibility is low. Driving in rain and fog, the driver's eyes are affected by certain influences. Generally speaking, the greater the rain, the greater the impact on the driver. Especially in heavy rain or thick fog, the windshield wiper wipes continuously, but due to rain, the light transmittance is greatly reduced. When dense fog occurs, the line-of-sight is only a few meters, visible distance is shortened, and visibility is low.
(2) Thick fog and rainy days The road is slippery and the vehicles are prone to cross-slipping and sliding. The main reasons are: First, the adhesion between the tire and the ground is reduced. The relevant data shows that the adhesion coefficient of asphalt pavement after rain is only 0.4-0.5. Due to the rain and fog, the oily surface of the asphalt road floats on the road. When the vehicle is used on such a road, the braking distance is greatly increased. At the same 20 km/h speed, braking distance on dry asphalt is only 3.8 meters during emergency braking, and 5.64 meters on wet asphalt. In addition, braking is used on a road surface with a low adhesion coefficient, and the wheels are quickly “locked†and slipping. When the wheel is "locked," the direction loses control. The second is uneven tire adhesion to the road surface. Due to the need of highway drainage, the road surface is generally repaired with a high middle and low arches on both sides. Due to gravity, the vehicle will have a side-to-side force from high to low. When the force in this side direction exceeds the adhesion of the road, the vehicle will slide sideways or even roll over.
(3) In rainy weather, the driving conditions deteriorated and the accidents increased. This is because long-term rain will cause subsidence and looseness of the roadbed. When driving, it will be a little careless. Under gravity, the vehicle will fall into the roadbed. When it is serious, it will cause serious accidents in which the vehicle will be destroyed.
(4) Pedestrians walk swiftly and avoid vehicles in time. When it was raining, many people did not bring rain gear in advance. When crossing the highway, they often ran back and scurry, ignoring other situations; cyclists also looked down and did not pay attention to traffic. In addition, pedestrians wear raincoats, rain gear, and rain noise, affecting both hearing and sight.
(5) Rain and fog will soak the tire brake drum and cause the brake to malfunction. After the brake drum is wet, it returns from the original dry friction to wet friction and the braking distance increases.
In addition, some drivers encountered rain or fog when they were out, fearing that the goods were raining or getting wet, and they were quick to speed up. They wanted to go back as soon as possible and the result was counter-productive; there were also high-speed cars with mud and water splashing on people. One, not happy, the result was in the season of ecstasy, a car accident.
Second, prevention measures
(1) When driving in rain and fog, it is necessary to check whether the brakes are deflected and whether the wiper works normally. The parts that are afraid of the rain should be covered.
(2) In rainy days, especially in heavy rain days, the road surface is slippery and the line of sight is poor.
(3) Rainy days Avoid stopping for a long time at places that are prone to collapse, such as river banks, embankments, cliffs, etc., and choose a solid and spacious ground for parking.
(4) When driving in fog, especially in heavy fog, the line of sight is unclear. Fog lights should be turned on. From time to time, horns should be pressed to warn vehicles and people to come and prepare for parking at any time.
(5) Driving in the rain, the distance from the preceding vehicle should be properly lengthened, avoid the use of emergency braking, prohibiting taxiing and sharp turns, and try to exercise in the middle of the road.
(6) When driving in the rain, attention should be paid to low-lying stagnant water sections, and it is estimated that the depth of accumulated water is indeed certain. When the flooded roads are flooded, they should take a look off or test the road conditions and water depth. They should not blindly wading through. At the same time, attention should be paid to road poles, wires, trees and buildings that are blown or blown by the wind to avoid causing danger or affecting traffic.
(7) When it rains suddenly, pedestrians, non-motorized vehicles, livestock, etc. on the roads will run eastward and west, looking for places to shelter from rain, or pedestrians and cyclists using umbrellas, raincoats, etc. to bury roads, causing difficulties in driving. At this point, you must decelerate and shout the horn to cause the pedestrian's attention. In the event of a storm, if it is difficult to drive, it should be suspended until the rainfall decreases.
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