Dresden Hauptbahnhof to the limits on Dresden station. For operational purposes, Dresden Hauptbahnhof (Hbf) is part is part of the Dresden “operating agency” ("Betriebsstelle"; DDRE) which consists of the following station parts: All lines to Dresden have entry signals, as do the opposite tracks. The operating agency of Dresden has a total of 15 entry signals. Two long-distance railway corridors intersect in Dresden. In addition to the important long-distance route to Leipzig, there is also the north–south corridor from Berlin via Dresden and Prague to Vienna. A third corridor from Nuremberg to Wrocław has lost its importance in Germany and Poland and
Dresden Photomasks. Their factories attract many suppliers of material and cleanroom technology enterprises to Dresden. The pharmaceutical sector developed at the end of the 19th century. The 'Sächsisches Serumwerk Dresden' (Saxon Serum Plant, Dresden), owned by GlaxoSmithKline, is a global leader in vaccine production. Another traditional pharmaceuticals producer is Arzneimittelwerke Dresden (Pharmaceutical Works, Dresden). A third traditional branch is that of mechanical and electrical engineering. Major employers are the Volkswagen Transparent Factory, EADS Elbe Flugzeugwerke (Elbe Aircraft Works), Siemens and Linde-KCA-Dresden. The tourism industry enjoys high revenue and supports many employees. There are around one hundred bigger hotels in Dresden, many