Tung Chung Line Extension
One of the plans is to extend the Tung Chung Line westward into Tung Chung West. This is because there is a lot of potential for development in western Tung Chung. Another station could also be built at Tung Chung East to serve potential developments there.
On the other end of the Tung Chung Line from Hong Kong station, it will be extended along the north of Hong Kong Island. There will be stations at Tamar, Wan Chai Exhibition, and Victoria Park/Northern Causeway Bay. The diagram below is one proposal for the Tung Chung line to reach Chai Wan and the Tseng Kwan O line to reach Central and all the way to Kennedy Town. This plan will eliminate the Island line. Another proposal is for the Tung Chung Line and Tseung Kwan O line to merge at North Point. This means there will be a single line from Tung Chung to Po Lam/LOHAS Park. This proposal will keep the Island line intact and will eliminate the inconvenience for those who use Fortress Hill Station, as they would not need to change lines to reach Causeway Bay and western Hong Kong Island, unlike the proposed plan below. One problem that arises is the Tung Chung Line runs at 15 trains per hour (tph) during peak periods, while the Tseung Kwan O line runs 30 tph. The Tung Chung line cannot run trains more frequently because it shares tracks with the Airport Express on Tsing Ma Bridge, and the signaling cannot handle so many trains at a time. To solve this problem there will be a special train service running from Yau Tong to possibly Hong Kong Station, which runs every four minutes. Combined with the usual Tung Chung line service of 15 tph between Tsing Yi and Hong Kong, which will run to the end of the Tseung Kwan O line. In this case, there will be trains arriving every two minutes between Yau Tong and Hong Kong station.