The North South Line is one of the main lines of the Mass Rapid Transit (MRT) system in Singapore. It runs from the northern region at Khatib station to the southern area at Marina South Pier, covering a distance of approximately 45 kilometers. This line serves key areas, including the central business district and residential neighborhoods, making it a vital transportation route for commuters. Opened in 1987, the North South Line was the first MRT line in Singapore. It features 27 stations, with several interchanges connecting to other MRT lines, such as the East West Line and the North East Line. The line is known for its efficiency and reliability, contributing significantly to the public transport network in the city.