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[Creeperopolis]

The North East Line (NEL) is a high-capacity Mass Rapid Transit (MRT) line in Singapore. Operated by SBS Transit, the 20-kilometre (12 mi) line is the MRT's shortest.[b] It runs from HarbourFront station in southern Singapore to Punggol station in the northeast, serving 16 stations via Chinatown, Little India, Serangoon and Hougang. Coloured purple on official maps, it is Singapore's third MRT line and the world’s first fully-automated underground driverless heavy rail line.

The NEL was planned during the 1980s to alleviate traffic congestion on roads leading to the northeast suburbs of the country. However, the project was deemed inconsequential for a few years due to the lack of demand at the time. After the government's decision to eventually go ahead with the project, its alignment and stations were finalised in 1996 and construction began the year after. Completed at a cost of S$5 billion, the line began operations on 20 June 2003. Two mid-line stations initially did not open with the rest of the line; Buangkok station opened on 15 January 2006, and Woodleigh station began operations on 20 June 2011. A one-station extension to Punggol Coast station, under construction, is expected to be completed in 2024.

The driverless line uses the moving-block Alstom Urbalis 300 CBTC signalling system. Alstom rolling stock – C751A and C751C – runs on the NEL, which is powered by an overhead line. The NEL is Singapore's first Art-in-Transit line, with 18 artworks displayed across its 16 stations. The stations are wheelchair-accessible, and most of them are Civil Defence shelters designed to withstand airstrikes and chemical attacks.