A radar system for motor vehicles, having a least one radar sensor having a range of less than 50 m for monitoring traffic in an adjacent lane, wherein the radar sensor has a phase-controlled antenna and a control device for setting a plurality of radar lobes having different geometries. The manufacturing method comprises the steps of forming a semiconductor light-emitting structure above a substrate; attaching the semiconductor light-emitting structure to a support; thinning the substrate to form a thinned structure; forming or attaching a carrier to the thinned substrate; and removing the support. The destination floor call received from a destination call device as well as starting floor information obtained from a detector used to identify the person having entered the call are transmitted to the elevator control system, which, based on the destination call, allocates an elevator to the person having entered the call. The rotary joint rotatably connects the lower leg link to the upper leg link. The fact that unitary walls with traverses between the walls for stabilizing them and where those traverses are located between the roll pairs, enables the spacing between the roll pairs to be substantially reduced by comparison with free-standing individual mill stands for the roll pairs.