Tentatively called the Tengah Line and Seletar Line, these two could potentially meet at the Greater Southern Waterfront and combine into a single line.
Under the bus contracting model, the Government owns all fixed and operating assets while operators focus on meeting service standards.
A motorcyclist skidded, crashed through a railing and ended up in a canal at Seletar West Link in an accident on Friday.
A new road opens at 11:00am today, providing an alternative route for motorists travelling to Seletar West Link and Tampines Expressway (TPE).