The electronic stability program ESP (Electronic Stability Program) supports the driver in critical driving situations such as skidding or imminent tipping over when driving too fast in curves. A vehicle with ESP is also fitted with a steering angle sensor, yawing rate sensor and an acceleration sensor. An ESP control unit with the following two functions is integrated in the electronics architecture:
Dynamic stability program (DSP)
The dynamic stability program prevents understeer (front wheel slide) by braking the inner rear wheel. Oversteer (rear skid) is prevented by braking the outer front wheel.
Roll-over prevention (ROP)
Before critical lateral accelerations are reached, the speed is preventively reduced by torque reduction or braking.