The Rotterdam Metro is a rapid transit system operated in Rotterdam and surrounding municipalities by RET. The first line, called Noord - Zuidlijn (North - South line) opened in 1968 and ran from Centraal Station to Zuidplein, crossing the river Nieuwe Maas in a tunnel. It was the first metro system to open in the Netherlands. At the time it was also one of the shortest metro lines in the world with a length of only 5.9 kilometers (3.7 mi).
In 1982 a second line was opened, the so-called Oost - Westlijn (East - West line), running between Capelsebrug and Coolhaven stations. In the late 1990s, the lines were named after two historic Rotterdam citizens, the Erasmus Line (North - South) after Desiderius Erasmus and the Caland Line (East - West) after Pieter Caland. As of December 2009, these names were dropped again in favour of a combination of letters and colours, to emphasize and clarify the difference between the separate branches, especially of the former East - West line.
Read more about Rotterdam Metro: Lines, Rolling Stock, Future Extensions, Traction Power, Further Reading, See Also