What does Power Assisted Steering utilize to provide varying levels of assistance?

Power Assisted Steering primarily utilizes a hydraulic system to provide varying levels of assistance to the driver. In this system, hydraulic fluid is pumped through various components to help reduce the steering effort required to turn the wheels of the vehicle. When the driver turns the steering wheel, this hydraulic pressure assists in moving the steering components, making it easier to steer, especially at lower speeds or when maneuvering.

The hydraulic system allows for variable assistance; when more force is needed, such as during sharp turns or parking, the system can provide increased assistance. This adaptability helps enhance the overall driving experience by making steering more responsive and less physically demanding.

While other systems, like mechanical linkages or electric motors, are used in different types of steering mechanisms (such as in some modern vehicles that utilize electric power steering), the hydraulic system remains the traditional and widely used method for power-assisted steering in many vehicles. Pneumatic systems are generally not utilized for steering assistance, which further distinguishes hydraulic power assistance in this context.