Double-deck elevator

Such a scheme can improve efficiency in buildings where the volume of traffic would normally have a single-deck elevator stopping at every floor.

In skyscrapers, this allows for much more efficient use of space as the floor area required by elevators is significant.

The ThyssenKrupp TWIN elevator places two independent elevator cabs in one shaft and the ThyssenKrupp MULTI system places several elevator cabs in one shaft—each cab is equipped with its own, independent linear motor and can move vertically but also horizontally from one shaft to another.

The second deck in a double-deck car may be used for the transportation of goods, typically outside of peak traffic periods.

This technique has the advantages of preventing damage to interior fixtures due to impact from trolleys and not requiring a shaft dedicated to a goods-only elevator car.