A rail system for a cabin of the vehicle comprises a rail with a main extension direction, a fixing element which can be fixed at various positions of the rail to hold a mounting element on the rail, and a cover device for covering the rail. The cover device has several planar cover elements arranged in continuous series extending along the rail, wherein the cover elements are each mounted so as to be pivotable between a closed state in which the respective cover element lies on the rail and an open state in which the respective cover element is removed from the rail. The fixing element has an engagement element which is configured, on displacement of the fixing element along the rail, to reach below a cover element and move the cover element from the closed state to the open state.