First of all, if the vehicle is moving a speed of greater than 10 km/h, a warning is given. Secondly, if the vehicle is travelling at a speed between 30-80 km/h, PCS has a brake assist function to slow the vehicle to 30 km/h. Lastly, if the driver does not react, PCS provides automatic braking. The driver is in full control of the vehicle. The PCS warning can be adjusted.