Smooth Stop (vehicle posture control during stopping)
Automatically controls braking in the final moments to ensure a smooth, comfortable stop for everyone on board
Smooth Stop is a feature in which the system controls braking force as the car comes to a halt.
Eliminating the need for the driver to feather the brakes, it suppresses the unpleasant jolt that occurs when the vehicle comes to a complete stop, providing a comfortable ride for everyone on board.
System operation
When a car comes to a halt with the brake pedal held at a constant pressure, deceleration changes sharply at the very end, producing an unpleasant rebound. Smooth Stop precisely controls braking force the instant before the car stops and suppresses this rebound, eliminating the need for the driver to feather the pedal.
If the driver presses harder on the brake or eases off while Smooth Stop is active, the system gives priority to the driver's input and controls braking force accordingly.
- During hard braking or other situations above a certain rate of deceleration, the system prioritizes to stop the car and Smooth Stop may not operate.
System mechanism
Smooth Stop controls braking force just before the vehicle comes to a halt, smoothing changes in vehicle speed to help suppress unpleasant body movement.
In a conventional brake system, a brake booster amplifies the force applied to the brake pedal, generating hydraulic pressure and operating the brakes at each wheel. Smooth Stop, however, uses an electronically controlled brake system that detects brake pedal input, and an electrical signal operates the actuator. This allows the system to control braking force independently of pedal input. By precisely adjusting braking force in the final moments before the vehicle comes to a halt, while taking into account factors such as vehicle speed and road gradient, Smooth Stop helps deliver a smoother change in vehicle speed until the vehicle comes to a halt.