The Electronic Stability Program ESP® is an active system which improves handling safety and stability. It contributes significantly to reducing the risk of skidding when negotiating turns or making evasive manoeuvres. It does this in critical handling situations through targeted braking interventions at each individual wheel, for instance if the bus is moving at critical limits in a curve. At the same time the engine output is reduced, with the effect that precisely regulated braking interventions prevent the bus from skidding, as far as this is physically possible.
ESP® monitors factors such as the lateral acceleration of the bus. If a critical handling dynamic situation is reached in lengthy curves – such as motorway exits – or when making a sudden change of lane, the vehicle's speed is automatically reduced to a level that re-establishes handling stability. The ESP® is comparable to that used in passenger cars, but is adapted for use in buses thanks to specific extended features.