London Underground at +420 V, giving a potential difference of 630 V. On the sections of line shared with mainline trains, such as the District line from East Putney to Wimbledon and Gunnersbury to Richmond, and the Bakerloo line north of Queen's Park, the centre rail is bonded to the running rails. The average speed on the Underground is 20.5 mph. Outside the tunnels of central London, many lines' trains tend to travel at over 40 mph in the suburban and countryside areas. The Metropolitan line can reach speeds of 62 mph. The London Underground was used by 1.379 billion passengers in
Line E (Buenos Aires Underground) using the two stations and their corresponding tunnels as the southern part of Line F since that line's projected trajectory in that area overlaps the former route Line E took. San José vieja was used as a set for the 1996 Argentine film Moebius and served as the fictional "Dock Sud" and "Parque" stations. Line E (Buenos Aires Underground) Line E of the Buenos Aires Underground, which runs from Bolivar to Plaza de los Virreyes, currently extending a total distance of 9.2 km, with a further extension to Retiro due to be completed in 2017. Opened in 1944, the Line