...that the 750 mm (2 ft 5+1⁄2 in) gauge Radebeul-Radeburg line in Dresden, Germany, is regularly operated by BVO GmbH using steam locomotives built in the 1950s, while older trains, using engines and cars built in the late 19th and early 20th century, are maintained by the non-profit Traditionsbahn Radebeul e.V. and are operated for special occasions?
...that Line 14 of the Paris Métro system in France was the second automated line of Île-de-France after Orlyval, but the first fully integrated one into the existing Paris metro network?
...that unlike most MTR stations in Hong Kong, the concourse, gates and platform of Po Lam Station are at the same level, and there is only one track from which trains depart in the same direction as they arrived which necessitates the halting of trains from Hang Hau Station midway between the stations while a train currently at the station departs?
...that in order to hasten the introduction of more powerful locomotives into Polish railways the first two of PKP's class SM15 locomotives, SM15-01 and SM15-02, were imported from the Soviet Union with subsequent production beginning in 1963 in Fablok, Chrzanów, with mainly of Soviet parts?
...that rail transport in Victoria, Australia, is provided by a number of private railway companies who operate over the government owned lines, using 5 ft 3 in (1,600 mm) broad gauge, with the exception of a few experimental narrow gauge lines, and a number of standard gauge4 ft 8+1⁄2 in (1,435 mm) freight and interstate lines?
...that on RER's Line B in Paris, France, the portion south of Gare du Nord is operated by RATP while the portion north of the station is operated by SNCF, requiring a change of train drivers at the station for the Interconnexion trains that travel from one network to the other?
...that during the Franco-Prussian War the Rechte Rheinstrecke line in present day Germany received great strategic importance as a supply route and as a result the building of the Sieg bridge was accelerated with extra workers, starting in the late summer of 1870?
...that the 108.5-kilometre (67.4 mi) long RERline A in Paris, France, is the busiest rapid transit line in Europe, carrying over one million passengers per day?
...that construction of the Nuremberg-Erfurt high-speed rail line in Germany, which is planned to be part of a high-speed rail connection between Italy and Scandinavia, began in 1996, was halted in 1999, recommenced in 2002 and is now expected to be completed in 2015 and is projected to now cost more than €5 billion?
...that the number of driving wheels on steam locomotives varied from just two (one axle) on the first locomotives in the early 19th century up to 24 (twelve axles) on the 2-8-8-8-2 and 2-8-8-8-4 triplex locomotives built in the 20th century?
...that Paris Métro Line 1, the first metro line opened in Paris, France, in 1900, was constructed using the "cut and cover" method and, as a result, follows the line of the streets above and is the closest line to the surface with some surface running at Bastille station and for the Seine-crossing at Pont de Neuilly?