Steering gear is a mechanical system that allows a vehicle to change direction. It connects the steering wheel to the wheels, translating the driver's input into movement. Common types of steering gear include rack and pinion and recirculating ball systems, each offering different handling characteristics. In addition to cars, steering gear is also used in various vehicles, such as trucks, buses, and boats. Proper maintenance of the steering gear is essential for safe driving, as it ensures responsive handling and stability while navigating turns and curves.