From 1957 onwards, the ÖBB-owned workshop in Wörth near St. Pölten, Lower Austria, produced motorized railway service vehicles of the series X 625 and X 626 in large numbers. These vehicles, known as "motorized draisines" or "motor railway cars," are primarily used in track service and continue to be in operation today. They can be found in various configurations with different trailers or railway service flatcars at nearly all train stations in Austria, operating on both standard gauge and narrow gauge tracks. They are also used by many private and museum railways. The difference between the X 625 and X 626 series is the installation of a more powerful engine in the X 626. The standard gauge vehicles can transport a maximum of two freight cars if needed, and are equipped with a central buffer coupling as well as a standard draw and buffing device. The narrow gauge vehicles only have the central buffer coupling. However, there are exceptions for former standard gauge draisines that have been converted to a 760 mm gauge, many of which are in operation on museum railways. The maximum speed of all vehicles is between 50 and 60 km/h. The X 501.6113, featuring advertising for the Austrian Red Cross, was converted from the former motorized draisine X 626.113 and put into service in Asparn an der Zaya as the first draisine control car in Austria. It is connected to a traction vehicle via a main air reservoir line and operates, for example, between Mistelbach and Asparn/Zaya as part of the Zayataler rail taxi service.