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The Active Front Steering from BMW represents another electrical steering system. The system consists of an additional planetary gearbox added to the steering column with which the steering ratio and torque can be varied according to the driving condition.

Large steering ratio→ suitable for parking.
More direct ratio→ suitable for low and medium speeds.
More indirect ratio→ suitable for directional stability at high speeds.
Steering force control based on the measurement of the yaw rate.