Abstract: The disclosure describes a production plant (1) for the machining or assembly of components (3) transported on workpiece carriers, which has lateral guide lanes and vertical guide lanes (13, 14) and a feed device (15), arranged independently of the latter devices, for the workpiece carriers. This comprises lane sections (11, 12) arranged successively, each one of which is assigned at least one feed device (15) of its own, which is independent of the adjacent sections and has a belt-type driving element (30) and that two vertical guide lanes (13) are arranged spaced apart across the conveying direction, which are assigned the belt-type driving element (30) and the feed drive (15) forms a lateral guide lane (14).