Whereas the Approach Warning with City Brake Activation detects vehicles, the Pedestrian Warning with City Brake Activation reacts to pedestrians. When there is a risk of collision, the Approach Warning triggers a two-stage warning. Firstly, a symbol in the instrument cluster lights up, followed by an acoustic alarm. The Pedestrian Warning operates at speeds between 10 and 60 km/h and emits a single-level warning in the event of acute danger. If the system warns of a potential collision, the brakes are simultaneously preconditioned for a faster response. In case of an emergency, the system initiates braking, ensuring that the collision speed is reduced. If a vehicle ahead brakes heavily, the car responds immediately when the Approach Warning is activated. The system operates in steps. A warning symbol is first displayed, then the symbol begins blinking, an acoustic warning is then emitted and finally the brakes are lightly applied (when travelling at speeds under 60 km/h).