The automatic emergency braking protects against rear-end collisions
If the automatic emergency braking detects that the distance to the preceding or stationary vehicle is becoming critically short at a vehicle speed above 30 km/h (18 mph), it prepares the braking system for potential emergency braking. If the driver does not react to the hazardous situation, the system warns the driver via an audible and/or visual signal, followed by a short but noticeable brake jerk. The system then initiates partial braking to reduce the speed and give the driver valuable time to react. As soon as the driver presses the brake pedal, the system provides braking support. To do this, the system continuously calculates the degree of vehicle deceleration required to avoid the collision. If the system detects that the driver has failed to apply sufficient brake force, it increases the braking pressure to the required level so that the driver can attempt to bring the vehicle to a standstill before a collision occurs. If the driver fails to react to the immediate risk of collision, and the automatic emergency braking determines that a rear-end collision is unavoidable, it can automatically initiate full braking. As a result, the vehicle is traveling at a significantly reduced speed when the collision occurs, reducing the severity of the crash for the passengers of both vehicles.