Emergency braking system, everyone is no stranger. Even the current 100,000 yuan class models can have this configuration. It is a technology that actively brakes vehicles in the case of non-adaptive cruise, such as when the vehicle encounters a sudden dangerous situation or the distance from the front car and pedestrians is less than the safe distance (but the vehicle with this function may not be able to completely brake the vehicle) to avoid or reduce the occurrence of collisions such as rear-end collisions, thereby improving driving safety.
Therefore, many automotive crash test institutions have also added emergency braking systems to the crash test project. For example, China Insurance Research Institute and C-NCAP have similar tests. If it is able to achieve emergency braking and does not collide with the dummy model, then it can get a high score for safety evaluation.
In recent years, emergency braking systems have also been continuously upgraded due to rapid advances in technology. In the low-speed environment of daily conditions, many cars can now be recognized and smoothly executed most of the time until they stop completely. Correspondingly, the scope of work of emergency braking systems is also expanding, such as identifying people or vehicles approaching or identifying intersections from opposite lanes, people or vehicles, people and bicycles, and even animals that suddenly intervene.
Recently, the National Association of Highway Safety Insurance (IIHS) is expected to increase the difficulty of emergency brake testing.
Currently, IIHS standard emergency braking tests assess whether the vehicle in front can recognize and slow down at a speed of 25 mph (about 40 km/h). However, according to THE IIHS, most drivers drive faster than this and experience the intervention of an emergency braking system in these cases. The program aims to encourage automakers to develop better systems by raising the standard for emergency braking testing.
David Kidd, a senior researcher at IIHS, said: "The AEB system now commonly used can prevent collisions at speeds above the 25 mph we tested. However, the current assessment does not tell us what it would be like if the speed was faster. ”
IIHS will test by increasing the emergency braking speed to 45 mph (approximately 72 km/h). A more difficult assessment method is also prepared to subdivide whether AEB works by speed.
The speed of 45 mph is set because 43% of rear-end collisions and 12% of fatal rear-end collisions in the United States occur within this speed range. IIHS predicts that when the new emergency braking test is introduced, the emergency braking performance of many vehicles will be improved and the accident rate will be reduced.
However, when the safety standards are upgraded, there will also be a negative impact, that is, there are a large number of cars to suffer, and it is estimated that the safety of many new cars will fail.