AutoBeta(AutoBeta.net)05/23 Report--

A few days ago, the Wenzhou Society of Automotive Engineering released the results of an investigation into the Tesla accident in Wenzhou last year, which was caused by the car owner stepping on the wrong pedal and mistaking the accelerator for the brake.

The judicial appraisal agency under the Wenzhou Society of Automotive Engineering described the testing process in detail, saying that during the whole testing process, there were two sets of data, one from the background of Tesla headquarters, and the other from the EDR on Tesla's car, both of which could reflect the state of the vehicle before the collision and the operation of the driver at that time.

What is EDR? EDR, whose full name is Event Data Recorder, usually starts work when the vehicle state changes drastically. Its function is to record some data related to vehicle dynamics and safety in the event of a collision, including vehicle speed, ABS status, steering wheel steering angle, engine state, airbag state, seat belt status, throttle position, driving assistance system status, and vehicle speed changes after a collision. These data can effectively restore the real situation at the time of the incident, so EDR is also known as the car's "black box" or "collision recorder". The data is stored locally, and reading requires a special device to physically connect to the vehicle, which ensures that the data is not modified.

The judicial appraisal agency under the Wenzhou Society of Automotive Engineering said: there is a set of data for airbag module data. this data can record the speed of the car in the five seconds before the collision and whether the driver's foot is on the brake pedal or on the acceleration pedal, including the opening of the acceleration pedal. On the other hand, the data of the vehicles in Wenzhou this time reflect the same situation on both sides, so they can corroborate each other. The accident was caused by the car owner stepping on the wrong pedal and mistaking the throttle for the brake. According to previous reports, Tesla's impact speed reached 120km / h when the Wenzhou Tesla accident occurred.

Event Review:

In August 2020, the car owner, Mr. Chen, drove his Tesla Model 3 to a sudden acceleration at a distance of 100m from the parking lot, crashing into more than a dozen cars before coming to a stop. The accident caused several cars to be damaged, and Mr. Chen's own Model 3 was also seriously damaged. The owner of the car, Mr. Chen, was successfully rescued after seven hours of rescue and was medically identified as a Grade 9 disability.

After the accident, Mr. Chen said that the accident was caused by the vehicle speeding out of control and crashing into the railing of the toll booth. At that time, his vehicle did not turn on autopilot. At first, the speed of the car was only 5km/h, then suddenly accelerated to 120km/h. The vehicle was suddenly out of control and the emergency braking had no effect. Mr. Chen also said that he had been an "old driver" for more than a decade and would never make the mistake of stepping on the accelerator as a brake.

In April, Mr. Chen posted a video on the social platform saying: so far, he has not received an apology from Tesla, has given up hope for the rights claim, and only hopes that Tesla can clear his name. He also revealed that under the persuasion of his friends, in order to settle the claim, he was finally forced to admit that he mistakenly stepped on the accelerator and caused the accident. As a result of this accident, he lost his ability to work, and the car owners who were hit by vehicles in the community often came to the door to collect debts, and they had to settle a compensation of NT $400,000 to NT $500,000, and they could not afford to repay it.

Mr. Chen, the owner of the Tesla accident in Wenzhou on May 12th, once again called on everyone to stay away from Tesla and cherish life. He also said that the consequences of touching Tesla can range from minor injuries to serious deaths. Mr. Chen said that on August 12, 2020, the car's automatic acceleration brakes failed and flew directly to a height of three or four meters at a speed of 120 yards. Physically, the small intestine is up to 30 centimeters, and the holes in the large intestine are all mended up, and now they are all hard inside. I have long given up the protection of my rights, and now I remind you that it is for the sake of "doing good" and do not want to see similar accidents happen again.

As for the accident investigation results released by Wenzhou Automotive Engineering Society, some netizens questioned whether the EDR data could be changed. Professionals said that the background data can be changed in principle, but the EDR data can not be changed.

Recently, there have been more and more reports about Tesla accident. Whether it is the improper operation of the driver or the problems of Tesla's products lead to the accident, the parties and drivers have different views on the occurrence of the accident. Generally speaking, Tesla generally believes that there is no problem with the braking system, while the parties think that Tesla has problems such as abnormal acceleration, brake failure and so on. However, as the current key data is in the hands of Tesla, it is not easy for consumers to get driving data, which to a certain extent increases the difficulty of safeguarding consumers' rights, but whether Tesla's product defects caused the accident. At present, there is no final conclusion.

"our quarterly safety reports can show that Tesla's car can effectively improve vehicle safety, especially after using an autopilot system," Tao Lin, Tesla's vice president of foreign affairs, said in an interview with the media. " At the same time, Tao Lin also said that in the use of vehicles, we also need to strengthen consumer education, and we need to cooperate with driving schools and transportation departments to let everyone understand the use of the new car and avoid misoperation in the use of the car. or some other problems caused by lack of functional understanding.

In order to "avoid misoperation in the use process", Tesla also added a "car owner's class" in the new car delivery. According to a group of pictures of Tesla's training site exposed by the media, a staff member with a work card is conducting vehicle use training to car owners waiting for delivery, including product details, driving mode and practical Tips for full coverage explanation.

From the specific content of the training, it is mainly aimed at the frequently reported "braking problems".

The contents include the main points of braking:

1. When you encounter an emergency brake, you must step on it to the end, do not release it halfway, click the brake will increase the braking distance

2. Slow down before entering the corner

3. Sit in the position of braking one foot to the end, and keep the knee bent.

4. The steering wheel is recommended (held at) 3-9 o'clock.

Due to the differences in some use habits of Tesla, and some car owners do not have pure electric vehicle driving experience, it contains some relatively basic driving instructions. It is understood that at present, the car owner's classroom has been tried out in some Tesla delivery outlets.

In addition, Tesla official WeChat is also constantly pushing some content about the functions of Tesla's car, including "power recovery braking", "matters needing attention of ABS system", "autopilot auxiliary function", "how to deal with complex road conditions" and so on.

Welcome to subscribe to the WeChat public account "Automotive Industry Focus" to get the first-hand insider information on the automotive industry and talk about things in the automotive circle. Welcome to break the news! WeChat ID autoWechat