What is "allersberg-express"

Allersberg-Express is the brand name for the RegionalBahn train service between Nuremberg and Allersberg in Bavaria in southern Germany, operated by Deutsche Bahn. It started operations on 10 December 2006 and is one of the few regional trains to run on a German high-speed line. The total journey time is about fifteen minutes; the train is subject to the fare structure of the Verkehrsverbund Großraum Nürnberg. The Allersberg-Express is also called the R9 Express on VGN network web site.