Interview with Tesla brake failure scene, media: less than 10 per hour

Use wechat scan QR code to share with friends and circle of friends <-- StartFragment-->

every time Li Xing is editor, how does Pei Jian shovel

single way two lane and two-way four Lane new road, with smooth pavement and large vehicles on the road. There are greening workers with spades to be maintained on the road...

4 28, "Daily economic news" reporter visited the "roof rights" female car owner Zhang Liang (a pseudonym) at the scene of the accident. Compared with the hustle and bustle on the Internet, it seems very calm here. But perhaps through this quiet road, the outside world can see the answers to many questions photo source: a few days ago, < a target = "_ blank" href=" https://news.163.com/news/search?keyword=%E7%89%B9%E6%96%AF%E6%8B%89 "> Tesla < / a > was ordered to provide Zhang Liang with half an hour's data of the accident. At the same time, it also released the data one minute before the accident. Data show that in < a target = "_ blank" href=" https://news.163.com/news/search?keyword=%E9%A9%BE%E9%A9%B6%E5%91%98 "> driver's last brake application < a target ="_ blank" href=" https://news.163.com/news/search?keyword=%E8%B8%8F%E6%9D%BF "> pedal < / a >, the vehicle speed is 118.5 km / h. In this regard, Zhang Liang insisted that the actual vehicle speed at the time of the incident was 60km ~ 70km / h, and the 118.5km/h data provided by Tesla was fabricated "at the time of the incident, the speed of vehicles is not allowed to be too fast at all. We have always expressed the hope that Tesla related staff can come to the road section to restore the scene, but until now, Tesla has not come. " Zhang Liang's younger brother Zhang Yi (pseudonym) told reporters According to Zhang Yi, on the afternoon of February 21 this year, his parents and sister (i.e. Zhang Liang) took his more than one year old daughter to a nearby tourist attraction, Xiaonanhai scenic spot, to play, and there was an accident on the way back. At that time, the car (model 3) was driven by his father. When he reached the red light intersection in the village of national highway 341, the brake suddenly "failed", < a target = "_ blank" href=" https://news.163.com/news/search?keyword=%E8%BF%BD%E5%B0%BE "> rear end collision < / a > after two vehicles hit the roadside concrete fence photo source: at 4:54 p.m. on April 28, accompanied by Zhang Yi, the reporter came to the accident section for on-site visit. The reporter found that although this is a one-way two lane, two-way four Lane new road, but from the South China Sea Scenic Area to the urban direction, especially in the near accident point before passing through two two two-way parallel line. The junction is the location of the high-voltage wire tower, which is surrounded by stone piers, so that the two-way four lane becomes two lane, and vehicles need to slow down to pass safely photo source: photographed by Li Xing, it is understood that there are two routes from Xiaonanhai scenic spot to the place where the incident happened. In order to restore his father's driving situation from the scenic spot to the place where the accident happened at that time, Zhang Yi took the reporter on these two routes. The first route is straight from the scenic spot, with villages on both sides of the road, with large pedestrian and traffic flow, and the average speed is kept at 60km / h; The second route is to turn left from the scenic spot and enter a newly built rural road. There are few vehicles and pedestrians. The road is smooth and the maximum speed can reach 100km / h photo source: according to reporter Li Xing, the reporter noticed that after the above two routes converged into national highway 341, due to the increasing traffic flow, the speed of both routes needed to be adjusted, and the maximum speed was 90km / h "the total length of these two routes is up to 14 km, so it doesn't take half an hour for normal driving. Under such road conditions, it is not clear how the speed of 100 km / h in half an hour provided by Tesla came from. " Zhang Yi said it is worth noting that on the 341 national highway where the accident happened, the most frequently used vehicles were trucks, followed by minibuses, and occasionally two wheeled electric vehicles and motorcycles passed by. In front of the incident site, there was a pedestrian crossing with traffic lights, and many pedestrians and two wheeled vehicles passed by photo source: Zhang Yi drives his vehicle into the village section of the south section of national highway 341 at 6 p.m. on the same day when photographed by reporter Li Xing. According to the reporter's observation, the traffic flow on both sides of the road has increased compared with around 5 p.m. With the increase of vehicles and the need to go through two parallel crossings to reach the incident point, the simulation site does not have the driving conditions for the speed exceeding 100km / h, but maintains the speed between 60km / h and 90km / h "in order to understand the situation, my brother-in-law and I have repeatedly tested this road section for many times, and it is impossible to reach the speed of 118.5km/h mentioned by Tesla." Zhang Yi said in this regard, the reporter asked the relevant person in charge of Tesla China for confirmation, and the other party only replied: "there is no information to share, please pay more attention to the official channels." the family members said that they were not issued with speeding tickets previously, the traffic accident responsibility certificate provided by Tesla and issued by the traffic management team of Yindu branch of Anyang Public Security Bureau showed that in the accident, Zhang violated the road traffic safety law of the people's Republic of China on "vehicles driving in the same lane, The rear vehicle shall keep a safe distance enough to take emergency braking measures from the front vehicle, and shall be fully responsible for the accident photo source: Sina Weibo (@ Tesla) "the traffic management team just said that it didn't keep a safe distance from the car in front, and didn't say that it was speeding." Zhang Yi told reporters, "if the speed reached 118.5km/h at that time, as Tesla data said, it would be deducted points, but in fact it did not." according to the data released by Tesla, when the driver pressed the brake pedal for the last time, the speed of the vehicle was 118.5 km / h. Within 2.7 seconds after the driver stepped on the brake pedal, the maximum pressure of the brake master cylinder was only 45.9 bar. After that, the driver stepped on the brake pedal more, and the pressure of the brake master cylinder reached 92.7 bar. Then, the front collision warning and automatic emergency braking function started (the maximum pressure of the brake master cylinder reached 140.7 bar) and played a role, reducing the impact amplitude. 1.8 seconds after the action of ABS, the maximum pressure of the brake master cylinder reached 140.7 bar, The system records the occurrence of the collision. After the driver stepped on the brake pedal, the speed continued to decrease. Before the collision, the speed decreased to 48.5 km / h "in the thick pile of accident data sent by Tesla to my sister, the two columns of brake pedal and switch pedal physical travel data are blank." Zhang Yi said the witness of the accidentLiu Hong (pseudonym) often passes through the section. He told reporters that from his experience, the speed of vehicles on this road section is generally between 60km / h and 80km / h“ At that time, I was driving in the opposite direction of the accident vehicle. I saw the accident vehicle "out of control" in front of the traffic light and hit the car in front of me. Normally, the car has to slow down in advance before the traffic lights, but the car seems to have hit the car in front of it without slowing down. " Liu Hong said Jia Xinxin (pseudonym), a resident nearby, was also a witness of the accident“ I was driving in the same direction as the accident vehicle, and the vehicle was directly "dry" up. I didn't hear the sound of ground friction accompanied by the vehicle's emergency braking. It was different from the usual rear end collision. At that time, I directly knocked the rear end of the car in front of me (completely concave) Jia Xinxin told reporters Jia Xinxing said that as a witness, he could not comment on whether the vehicle was "< a target ="_ blank" href=" https://news.163.com/news/search?keyword=%E5%88%B9%E8%BD%A6%E5%A4%B1%E7%81%B5 "> brake failure < / a >" made a judgment, but he believed that the speed of the accident vehicle certainly did not exceed 100km / h at that time“ At that time, there were more vehicles on the road in the suburbs, and the vehicles could not run at all. Generally, the speed was about 60km / h. If there is such a high speed, the car in front will be hit even worse. " Jia Xinxing thinks photo source: every time photographed by reporter Li Xing, "my father repeatedly told us that when he was 150-200m away from the car in front, he began to release the accelerator pedal to slow down, and then point the brake to slow down. When he found that the speed didn't decrease significantly, he stepped on the brake again. At this time, the brakes were stiff and could not be stepped on, causing the vehicle to directly hit the vehicle in front and then stop. At that time, the speed was only 60km / H ~ 70km / h According to Zhang Yi, his father got his driver's license in 1986 and has been driving a large truck in a freight company "the whole family is in the car. My father won't make fun of the whole family. He drives 118.5km/h on such a road." Zhang Yi said the data is published and the brake fails in fact, Tesla released the data and text description one minute before the above accident, which also aroused doubts from the outside world Zhang Xiang, an auto industry analyst, said that by analyzing Tesla's background data, we can see the loopholes. The most intuitive point is that Tesla's AEB (automatic emergency braking system) did not play its due role. It only braked one second before the accident, but the accident could not be avoided at this time photo source: Sina Weibo (@ Tesla) according to dearauto, a doctoral tutor from the school of vehicles and transportation of Tsinghua University, Yu, also voiced this, saying that Tesla's public data just confirmed that the accident vehicle was "brake failure". Yu believes that Tesla's statement that "the maximum brake master cylinder pressure is only 45.9bar in 2.7 seconds after pressing the brake pedal" is problematic. In the teacher's opinion, for ordinary passenger cars, the brake master cylinder pressure of 4.59mpa is absolutely not light. Tesla's statement to the media is misleading, misleading everyone to come to the conclusion that "the driver's pressure on the brake pedal is insufficient". At the same time, it took 0.33 seconds for the vehicle speed to reach 45.9 bar from 94 km / h. at this time, no vehicle speed data was provided a senior executive of an automobile software technology company, who did not want to be named, said: "whether there is a problem with the vehicle and whether the owner has stepped on the brake pedal, it needs to be announced by a third-party testing agency, and it is not fair (by Tesla) to announce unilaterally." Zhang Xiang also said that the data released by Tesla is not valid as evidence, because the above data is not as tamperable as the black box of aircraft. First of all, Tesla's background data belongs to remote data, which is controlled remotely by Tesla official. Tesla official has the conditions to modify the background data in the face of external doubts, Tesla issued a statement saying that Tesla vehicle data is recorded by encryption technology and cannot be read, modified or deleted directly at present, there is no final conclusion on this turbulent case of safeguarding rights. How will it end in the end? The industry will continue to pay attention reporter | & nbsp; Li Xing & nbsp& nbsp; Edit | & nbsp; How does Pei Jian proofread Du Hengfeng; Sun Zhicheng <-- EndFragment-->

2023-03-22 10:04:33

新人小程序+APP定制199元起

发放福利，助力中小企业发展，真正在互联网中受益

点击询问定制

广告服务展示