The easternmost station along the Tuas West Extension ( EW30 ) will have 2 island platforms and 4 tracks as it will serve as an interchange station for the future 6 kilometre Tuas South Extension which will have 2 new stations . The easternmost station along the Tuas West Extension will have 2 island platforms serving 4 tracks as it will be serving as an interchange station for the future 6 kilometre Tuas South Extension which will have 2 new stations .