Most parallelogram lifts are drive-on lifts with two runways. Traditional parallelogram lifting mechanisms move the vehicle a short distance fore or aft when lifting or lowering. There are hybrid versions of this lift type that move straight up and down. This lift type is powered by an electro-hydraulic power unit. Synchronization of the two parallel runways is usually accomplished by hydraulic or electronic means. Sometimes a torsion bar connected to opposing parallelogram legs is employed to assist in synchronization. Some drive-on parallelogram lifts can be configured to perform wheels-free services.
