On April 26, in Yuncheng, Shanxi, a traffic accident occurred in a Wenjie M7 vehicle, and three drivers and passengers were killed.
Screenshot of the video
On the afternoon of May 6, AITO's official Weibo issued the "Explanation on the Technical Issues Related to the New M7 Plus in the Traffic Accident of Houping Expressway in Shanxi Province", officially responding to the four major questions about the accident from the outside world.
According to the description: On April 26, a traffic accident occurred in the Houping Expressway section of Shanxi Province, and a road maintenance vehicle of the new M7 Plus was rear-ended and collided with in the inner fast lane. We are deeply saddened by this traffic accident.
After the accident, we actively cooperate with the traffic police department to carry out the accident investigation, provide all necessary data to restore the cause of the accident, and the specific investigation results are subject to the notification of the traffic police department.
The incident has recently received widespread attention on the Internet, and the technical problems related to the new M7 Plus vehicle (hereinafter referred to as the "accident vehicle") in the accident that Wenjie users are concerned about are explained:
- Question 1: Why did the Automatic Emergency Braking (AEB) function not successfully avoid a collision?
The braking system of the accident vehicle was normal before the collision, and according to the background data analysis, there were 2 braking actions within 5 minutes before the accident, and the vehicle was able to slow down normally.
The new M7 Plus is equipped with a Level 2 driver assistance system (non-Huawei ADS 2.0 intelligent driving system), and its automatic emergency braking (AEB) operating range is 4~85km/h. The vehicle was traveling at a speed of 115 km/h at the time of the collision, which exceeded the operating range of automatic emergency braking (AEB).
- Question 2: What is the cause of the vehicle fire?
When the accident vehicle and the road maintenance vehicle in front of 115km/h high-speed rear-end collision, the rear of the vehicle in front of the protruding beam-like hard structure instantly and seriously invaded the front cabin and the passenger compartment on the upper left side of the accident vehicle, resulting in serious damage to the front cabin and the passenger compartment, the wiring harness was cut off instantly, the front nacelle was ignited by high-temperature parts or wire harness short-circuit sparks, the left side of the front nacelle caught fire first, and then the fire spread to the whole vehicle, and the power battery pack did not spontaneously combust.
The schematic diagram is a technical simulation demonstration with reference to the data related to the accident vehicle↓↓
- Question 3: Is the airbag open normally?
According to the background data analysis, there was a seat belt buckle signal in the main driver's seat before the collision, and there was no seat belt buckle signal in the passenger seat and the three rear seats, and the airbag status monitoring was normal. At the time of the collision, the vehicle's airbags are deployed normally.
- Question 4: Can the car door be opened after a collision?
The new M7 Plus has a collision automatic unlocking function, and is equipped with a mechanical door handle, which can be unlocked and opened by pulling the mechanical door handle in special emergencies. When the accident vehicle and the road maintenance vehicle in front of the 115km/h high-speed rear-end collision, the rear of the vehicle in front of the protruding beam-like hard structure instantly and seriously invaded the front cabin and the passenger compartment on the upper left side of the accident vehicle, resulting in the front cabin and the crew compartment in the power cord and signal line were cut off instantly, the door handle controller could not receive the pop-up signal, and the rescuer broke the window and pulled the handle in the mechanical door to open the door to carry out rescue.
[Previously reported]
On April 28, Ms. Ma, a family member of the deceased, said that on April 26, her younger brother was driving a Wenjie M7 vehicle on the highway when he collided with a sprinkler truck in front of him on the fast lane and caught fire, killing her husband, younger brother and two-year-old son.
The video shows that after the accident, a number of well-wishers at the scene participated in the rescue, trying to break the windows of the car and rescue the people in the car.
After the incident, the family raised a series of questions. Including whether the maintenance vehicle occupies the fast lane, whether there are appropriate road warning signs at that time, and whether the maintenance personnel have the ability to rescue in time. In addition, the family questioned why AEB and GAEB did not have automatic emergency braking.
On April 29, the family of the accident posted through Weibo, "Thank you to the good Samaritan for breaking the window and opening the door to rescue my relatives as soon as possible, although the death has been lost due to the vehicle collision, the deceased has been safe, I hope you will ignore or delete all kinds of false reports and content on the Internet, and I hope you will not disturb me and my family again." ”
Source | @AITO car Red Star News