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.