Abstract: An apparatus for destroying unwanted vegetation in the region of travel ways that includes a steam generating unit, which is mounted on a vehicle and to the steam output of which are connected steam nozzles which form at least one nozzle bar. The at least one nozzle bar extends transversely to the direction of travel essentially across the width of the travel way and is mounted beneath the bogie of the vehicle by a central support of adjustable height. The apparatus further includes lateral support portions with nozzle bar sections which are pivotable about a shaft extending in the direction of travel, as well as adjustable vertically and laterally. The central support and the lateral support portions are constructed as an open-bottomed hood with a top, side walls and end walls.