The most common type of independent suspension is wishbone.To locate the wheel, it has two wishbone-shaped arms that are sometimes parallel. There are two attachment points for each wishbone or arm on the chassis, as well as one joint at the knuckle.To control vertical movement, a shock absorber and coil spring are mounted to the wishbones.The body and cross member of the vehicle send weight to the coil spring, which transmits it to the lower wishbone member.The wishbones transfer acceleration, braking, and cornering forces in addition to positioning the wheels and carrying the vehicle's weight.