Dual-clutch transmission

 It uses two separate clutches[1] for odd and even gear sets. It can fundamentally be described as two separate manual transmissions (with their respective clutches) contained within one housing, and working as one unit.[2][3] They are usually operated in a fully automatic mode, and many also have the ability to allow the driver to manually shift gears in semi-automatic mode,[1] albeit still carried out by the transmission's electro-hydraulics.