Driver input from the steering wheel is sent to the steering rack and pinion via the steering shaft. The steering wheel rotation is converted to horizontal movement by the steering rack and pinion.
Most vehicles use hydraulic fluid pressurised by a power steering pump to provide assistance to the driver in turning the wheels. A small valve in the steering rack directs the pressurised fluid according to which direction the driver is trying to turn the wheel.
Track rods and track rod ends connect the steering rack and pinion to the wheels on the vehicle. As the steering rack and pinion moves left and right, the angle of the wheels change. Some steering components can be adjusted to ensure that all four wheels are aligned correctly. Regular alignment checks help to prevent premature tyre wear.
The steering system transfers driver input from the steering wheel to the wheels.
Track rods push and pull the wheels in the designated direction.