Initially CBTC will operate during the final hour of passenger service on the NWL. LTA says operating hours will be extended if the initial trials prove successful.

The system will replace the fixed block signalling currently used on Singapore’s oldest metro line, reducing minimum headways from 120 seconds to 100 seconds.

Since last August LTA and SMRT have been testing the system during engineering hours. Interface testing has also been carried out between the NSL and the East-West Line, where resignalling work is still underway.