Thats an interesting question and Well, this is pretty common because in some systems the passenger cabins, which can hold between two and 16 people, are connected to the cable by means of spring-loaded grips. These grips allow the cabin to be detached from the moving cable and slowed down in the terminals, to allow passengers to board and disembark. Doors are almost always automatic and controlled by a lever on the roof or on the undercarriage that is pushed up or down.
