The Sideguard Assist, also called a turning assistant, informs the driver when there are pedestrians, cyclists or other stationary obstacles in the zone monitored on the door side when turning. If there is a risk of a collision, the driver is given an additional warning. On city buses, a yellow flashing warning triangle in the A0 pillar on the door side warns the driver first. In the event of a collision risk, it flashes red and lights up permanently. On coaches this warning triangle is integrated in the wing mirror on the door side and also on the instrument panel. Added to this is a vibration warning in the driver’s seat. The revolutionary Sideguard Assist system is available for the Citaro (all versions), for the CapaCity and the Tourismo.