Ever since the First World War, motor vehicles are being transported by train from one side to the other. The "Autoschleuse" or "Tauernschleuse", known in English as Tauern Motorail consists of a specially adapted car shuttle train, with the possibility to load and unload many cars in a short amount of time. Since the safety rules were sharpened, the train also consists of several passenger carriages and passengers travel within them. After a large number of serious accidents, in Austria (Tauern Road Tunnel, 29 May 1999) as well as in other countries, (Mont Blanc Tunnel, 24 March 1999, Gotthard Tunnel, 24 October 2001), the Austrian government expressed its concerns about the safety in tunnels, not only in road tunnels, but also in railway tunnels, considering the large amounts of dangerous goods being transported through them. With the scheduled renovation came the installation of extensive systems for fire detection, emergency report systems and escape route indications. The car transport system was also adapted to new safety regulations. Formerly, passengers using the "Autoschleuse" were allowed to stay in their cars during the 11-minute journey. Nowadays, all passengers have to get into a passenger carriage directly behind the locomotive. Special fire extinguishing trains are located at both ends of the tunnel. On August 12, 1947, a bomb exploded under a British military train carrying 175 people from London to Villach. The bomb exploded under the baggage compartment and injured one soldier. A second bomb failed to explode, they were intended to derail the train over a steep cliff. The terrorist group Irgun was later implicated in the attack.