48 km/h, Tesla Chevrolet Toyota Honda was destroyed by the group
Editor’s note: This article is from WeChat public account “Quantum” (ID: QbitAI), author Guo Yizhen.
Automatic driving is really fashionable, but assisted driving has become a function of many car brands.
So, how powerful is the assisted driving function? Can it really improve driving safety?
In ADAS (Advanced Driver Assistance System), pedestrian detection and automatic emergency braking are two important functions. When the passerby suddenly appears, with the help of the car camera and computer vision technology, these two functions let the car judge Is there a danger of a collision and decide whether to urgently brake to avoid a collision.
The American Automobile Association (AAA) recently conducted a test to select vehicles from four brands, Chevrolet, Honda, Tesla, and Toyota, to test their reaction to pedestrians.
The result, the rollover, and the entire test, there are basically few successful brakes.
True road test
The entire test was conducted at the Auto Club Speedway in Fontana, California.
This is the four-lane high-speed asphalt road of the car club. There is a solid white line in the middle of the driveway, and there is also a right turn road with a radius of 17.3 meters.
Vehicles, the American Automobile Association selected four vehicles with pedestrian detection capabilities: Chevrolet Mai Rui Bao, Honda Accord, Tesla Model 3 and Toyota Camry.
In the case of “pedestrians”, the target used in this test is a dummy, including a dummy of an adult size and a dummy of a child’s body. The dummy will pass the test vehicle at a speed of 5 km/h. The road moves from left to right.
After each test, when the vehicle detects a pedestrian, issues a visual alarm, and starts automatic braking, the longitudinal distance, the collision time, the impact speed/separation distance are recorded.
Test performance is anxious
The test scores were performed at 20 mph (32 km/h) and 30 mph (48 km/h).
Speed: 32km/h: Only Camry is reliable
At a speed of 32km/h, Chevrolet Mai Ruibao detected pedestrians on average 2.1 seconds and 19.2 meters before hitting the pedestrians in five tests, but failed to reduce the speed sufficiently low before the collision occurred. s level.
Look at the data for each test, the Braking Longitudinal Distance and the Max Deceleration are both 0. This car sees people, it is not braking.
Tesla Model 3 performed better. Although the pedestrians were found 1.4 seconds ahead and 12.8 meters away, at least people were found to have to brake, but they still encountered pedestrians in five tests. The collision speed was nearly 29km. /h.
This speed seems to be no different from no brakes.
The performance of the Honda Accord is uneven, although passers-by are detected on average 0.7 seconds before the collision. However, fortunately, three of the five tests in the test were timely and did not hit people.
The Toyota Camry is the most reliable, and has not met anyone in five tests!
On average 1.2 seconds ahead, 10.8 meters found pedestrians, but when they walked more than 6 meters, they stopped the car.
Overall, red on the map is the speed at which people hit, while blue is the distance from the dummy before the average impact.
It can be seen that the Toyota Camry is the most reliable, and the Chevrolet Mai Rui Bao and Tesla’s results are very ugly.
Speed of 48km/h: almost group extinction
However, when the speed was increased to 48km/h, except for the Honda Accord’s successful braking twice without hitting people, the other ones all hit the people without exception.
The Chevrolet Mai Rui Bao, Tesla Model 3, and Toyota Camry basically did not detect pedestrians.
Chevrolet Mai Rui Bao:
Tesla Model 3:
Toyota Camry:
However, 5 times of the test hit 3 people, the Accord system can not be said to pass.
48km/h is not high, but several major car brands are almost out.
When a child appears: once again grouped out
In addition, the American Automobile Association has also proposed a proposition that increases difficulty:
Children suddenly appear, what should I do?
They parked two cars on the side of the road, and then a dummy reminded by a child suddenly appeared between the two cars to see if the test vehicle could quickly identify the child and brake.
I believe this is a nightmare for many human drivers.
At a speed of 32km/h, only the Honda Accord did not hit the child twice.
The other three cars hit the kids every time.
Conclusion: Both are slag
The driver assistance systems on these vehicles are now slag.
Before the real autopilot is coming, the human drivers are very responsible, or drive well, don’t let the driver-assisted system act on their own, they are really unreliable.
Reference:
AUTOMATIC EMERGENCY BRAKING WITH PEDESTRIAN DETECTION, AAA
https://www.aaa.com/AAA/common/aar/files/Research-Report-Pedestrian-Detection.pdf