Detachable gondola lift or chair-lift

An aerial ropeway transport installation, in particular a gondola lift or chair-lift, having terminal stations equipped with transfer and/or parking tracks, grips for coupling to a rope, having roller sheaves, said grips being able to be detached from the aerial ropeway in the terminals and to run on the transfer and/or parking track before being recoupled to the rope, said track comprising straight sections and curved sections, vehicles, in particular cars or chairs, suspended from the grips and a means for driving the vehicles arranged so as to drive the vehicles following one another closely or almost touching on the straight sections at a first speed, and on the curved sections at a greater speed than said first speed so as to increase the distance between vehicles with a clearance sufficient for the curved sections to be passed through without the risk of the vehicles following one another colliding.