Vienna U-Bahn Editorial Image

The Vienna U-Bahn German: U-Bahn Wien, where U-Bahn is an abbreviation of the German term Untergrundbahn English: underground railway, is one of the two rapid transit metro systems for Vienna, Austria. The second system is the Vienna S-Bahn. With the opening in October 2013 of the 4.2 kilometers 2.6 mi-, three-station extension of the U2 line,[6][7] the five line U-Bahn network consists of 78.5 kilometers 48.8 mi of route, serving 104 stations.[4] It is the backbone of one of the best performing public transport systems worldwide according to UITP International Association of Public Transport in June 2009. More than 1.3 million passengers rode the Vienna U-Bahn every day in 2009, and 567.6 million passengers used the U-Bahn in 2011, which declined to 428.8 million passengers in 2013. The network is undergoing expansion and rolling stock renewal. Since 1969, 200 million euros have been invested annually in the extension of the Vienna U-Bahn.