Harm of puncture to vehicle driving

According to the statistics of highway accidents, the proportion of car accidents caused by puncture is the highest. According to statistics, 70% of traffic accidents on expressways in China are caused by flat tires, while in the United States, the proportion is as high as 80%. After collecting the traffic accidents in Guangzhou, Shenzhen and Dongguan, many experts in Humen Hospital found that during the period of 1.998-2000, the tire puncture accidents on Guangzhou-Shenzhen Expressway accounted for 34.65,438+0.4% of all the accidents in this section. Interestingly, the last two tires are the most prone to puncture, and the puncture rate of the right rear tire is 12 percentage points higher than that of the left tire. Whether it is a big car or a small car, a flat tire will bring a lot of harm, but from the point of view of the degree of harm, the harm of a small car is far greater than that of a big car.

Although the tires of large vehicles burst loudly, the damage caused is far less serious than that of small cars. Moreover, most of the traffic accidents caused by flat tires are cars. Because of the heavy load and slow speed, the stability of large vehicles will not be greatly affected after tire puncture. Under normal circumstances, drivers can safely pull over or enter the emergency parking area, and some experienced drivers can barely drive off the expressway from the nearest exit after a flat tire. And cars, because of sudden flat tires, many drivers will be at a loss, leading to out-of-control vehicles. Either collide with passing vehicles or collide with high-speed guardrails. Usually the degree of collision is still very serious, causing great harm to vehicles and people. Due to many factors, accidents are inevitable. Mastering the vehicle maintenance method of pre-puncture can minimize the possibility of vehicle puncture accident. Learn the correct treatment measures after the vehicle has a flat tire, and deal with it reasonably when a flat tire accident happens unfortunately, so as to avoid greater danger and ensure the safety of life and property to the maximum extent. When the speed is slow on the general road, a flat tire occurs, and the treatment method; (1) Hold the steering wheel tightly, control the direction of the vehicle, and slowly pull the vehicle to the side of the road. (2) If the front tire has a puncture, step on the brake pedal as lightly as possible to avoid excessive pressure in the front of the car and make the tire leave the rim. Hold the steering wheel tightly at the same time and stop at the side of the road. (3) If the rear wheel has a flat tire, the rear part of the vehicle will swing. At this time, the driver should lightly step on the brake pedal and repeatedly step on it to make the center of gravity of the vehicle move forward and reduce the burden on the rear wheel. At the same time, make corresponding treatment according to the first item. Disposal measures after expressway puncture. Freeway is different from ordinary highway, it adopts fully enclosed, multi-lane, central separation and full interchange, thus providing more favorable conditions for accelerated, safe, comfortable and continuous operation of vehicles and improving transportation capacity. However, due to the high speed of expressway vehicles, a slight negligence may lead to serious traffic accidents. If a vehicle has a flat tire while driving on the expressway, it can be handled as follows: (1) The tire suddenly bursts while driving. If the speed is not particularly fast, the vehicle will not roll over immediately after a flat tire. Never step on the brakes at this time. Both hands should fully control the steering wheel, keep the vehicle upright and forward, brake the vehicle with the traction of the engine, make the vehicle slowly slide to a stop, and immediately turn on the hazard warning flash. When the speed of engine brake is not well controlled, you can't use the brake to stop, so as to avoid greater danger caused by vehicle inertia. (2) If the vehicle is not parked on the shoulder, try to push the vehicle onto the shoulder. (3) Let all passengers get off the bus, stay in a safe place outside the highway guardrail, and don't walk around at will to prevent secondary traffic accidents. (4) Put danger warning signs at the rear of the vehicle150m. (5) Call the police immediately, and the traffic rescue vehicle will drag the car off the highway. In recent years, vehicle puncture accidents have suddenly increased. According to statistics, puncture accounts for more than 70% of traffic accidents on expressways. Frequent car accidents caused by flat tires have aroused people's vigilance and confusion. The car condition and road conditions have improved. Why are there so many flat tires? This is mainly because people have not realized that high-speed vehicles put forward higher requirements for tire protection. As long as we can reasonably choose and use tires correctly and take corresponding protective measures, I believe that tire puncture accidents will be greatly reduced. Preventive measures for puncture are mainly divided into two aspects: daily maintenance and driving attention. Daily maintenance: Pay attention to tire maintenance at ordinary times, and regularly check tires can eliminate hidden dangers. Always check whether it reaches the warning line of wear mark (trench depth), and replace the tires in normal use immediately when they wear to this mark; Check the air pressure at least once every two months. You can't just check its sinking visually. If you find that the air pressure is insufficient, find out the cause of the air leakage. Always check whether the tires are damaged, such as nails and cuts, and repair or replace the damaged tires in time. Once the two front wheels are repaired, they should be adjusted to the rear wheels in time to ensure that there are no hidden dangers in the two front wheels. Remove the stones in the groove in time to avoid tire crown deformation; Avoid tire contact with oil and chemicals. Check the four-wheel alignment of the vehicle regularly. If the positioning is found to be poor, it should be corrected in time, otherwise it will cause irregular tire wear and affect the mileage life of the tire. Generally, the shelf life of rubber is about 5 years, and the service life of tires is closely related to the use and storage conditions. Tires can no longer be used due to aging, premature spotting on the sidewall, accidental damage and abnormal wear. All tires should be used within the service life (the service life of tires should be 2-3 years or about 60,000 kilometers), and tires that exceed the service life or are seriously worn should be replaced with new tires in time. Pay attention to pre-pricking tires when driving. One way to avoid tire puncture caused by high temperature is to fill the tire with nitrogen. First of all, nitrogen is the most stable gas in diatom, its molecular free path is larger than oxygen, and its permeability in rubber is low. Therefore, the decline rate of tire pressure is greatly reduced, and the time to maintain normal tire pressure is increased. At the same time, the volume expansion of nitrogen is much lower than that of air containing water when the temperature changes, thus reducing the probability of tire puncture. Secondly, nitrogen-filled tires can delay rubber aging. Nitrogen tires run 26% more miles than pneumatic tires. In addition, because there is no water, nitrogen can also prevent the internal oxidation of the rim. Third, the nitrogen-filled tire can be inflated according to the designed tire pressure, reaching the fuel consumption index when the automobile is designed. Nitrogen-filled tires save 2% ~ 10% more fuel than pneumatic tires. Tire inflation generally uses compressed air, which contains water and oil. Combined with oxygen in the air, the tire oxidizes, accelerates tire aging and steel ring corrosion, resulting in valve leakage and tire leakage, resulting in unstable tire pressure. Nitrogen is dry and clean, free of water and oil, and will not oxidize tires and corrode rims. And that service life of the tire is prolon. The permeability of nitrogen in the tire is low, which can keep the tire pressure stable for a long time. Reduce the probability of tire puncture and increase the safety of vehicle driving.