Since the completion of the initial MRT system in 1990, the Singapore government has taken steps to further expand the city-state's urban rail network; said expansions have been highlighted in many plans such as the 1996 White Paper and various Land Transport Master Plans, the latest of which intends to bring the length of the MRT network up to almost 400 km by 2040. The first of such extensions was the Woodlands extension connecting Sembawang, Woodlands and Kranji to Yishun and Choa Chu Kang in 1996. In 2002, a spur line connecting Changi Airport to the main MRT network via Singapore Expo was fully completed while a new infill MRT station, Dover MRT station, also commenced operations. In 2003, the first fully automated heavy rail metro line (there are several older fully automated medium capacity urban rail systems in cities such as Lille) opened between Punggol and Harbourfront.