Independent of the function of the proximity control system (ART), Active Brake Assist 4 warns the driver of a collision with an obstacle and brakes the bus independently if necessary. The radar-controlled system continuously scans the traffic lane at a distance of up to 250 metres ahead of the bus.

As the first system of its type worldwide ABA 4 also reacts to pedestrians. Thus, beside vehicles moving ahead and stationary obstacles (e.g. a tailback) the system also detects pedestrians at a maximum range of 80 metres. If for example the distance from pedestrians reduces dangerously, the system first alerts the driver by visual and acoustic warning signals, simultaneously initiating partial braking to a standstill if the driver does not react. The resulting partial braking gives the driver the opportunity to avoid a collision through full braking or a steering manoeuvre. Additionally, he can warn endangered pedestrians by sounding the horn in good time.

The Adaptive Cruise Control feature (ACC) relieves the driver by maintaining a constant distance – defined by the driver – from the vehicle ahead, based on continuous measurements. This not only increases safety on country roads and motorways, but also convenience.

A radar system, which guarantees outstanding functionality even under poor weather conditions and in the dark, monitors a distance of up to 250 metres in front of the vehicle and to the full width of the road. If the distance from the vehicle driving ahead falls below a variably defined safety distance, ACC slows the bus down so that the safety zone is maintained. Many rear-impact collisions can therefore be avoided.

The Electronic Stability Program (ESP®) is an active system for increasing driving safety and stability. It makes a noticeable contribution to reducing the risk of skidding during cornering or evasive manoeuvres. This is achieved by specifically controlling the braking forces on each individual wheel in critical handling situations, for example if the coach approaches physical limits when cornering. At the same time the engine output is reduced. A possible "breaking-loose" of the bus is thus prevented by the finely metered braking - within the limits of the physical possibilities. ESP® monitors, among other things, the lateral acceleration of the bus. If, on long bends – such as motorway exits – or during rapid lane changes, the bus reaches a critical driving situation, the vehicle speed is automatically reduced to the extent necessary for the bus to return to a stable handling situation. ESP® is similar to the system installed in cars but provides additional functions adapted for use in buses.