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A steering linkage is the part of an automotive steering system that connects to the front wheels.
The steering linkage which connects the steering gearbox to the front wheels consists of a number of rods. These rods are connected with a socket arrangement similar to a ball joint, called a tie rod end, allowing the linkage to move back and forth freely so that the steering effort will not interfere with the vehicles up-and-down motion as the wheel moves over roads . The steering gears are attached to a rear rod which moves when the steering wheel is turned. The rear rod is supported at one end.
Technology
Most modern cars have a full mechanical steering linkage system, but a recent innovation is the steer by wire system.
References
Steering linkage Wikipedia(Text) CC BY-SA