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Automotive glossary: What is a Servo Steering or Power Steering?

Definition of Servo Steering: In order to improve the driving comfort, many vehicles dispose of a servo steering, that facilitates the driver to turn the steering wheel without appreciable effort, especially in stand or when shunting. This is brought about a mechanic or hydraulic (operated by liquid pressure) servo mechanism. That means, that the steering movement given by the driver is assisted by different methods, so that the driver needs to practice less force. Good power steerings work speed depending, i.e. when parking or or in stand, the driver disposes of the full servo assistance, as here the greatest steering force has to be expended. On higher speeds the servo assistance decreases, as the necessary steering force is small anyway, and to leave the driver with a better control of fine steering movements.

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