How did a safe MRT system indirectly cause delays?

Last Friday (Mar 19), Southbound trains towards Marina South Pier on the North-South Line (NSL) were delayed during the morning peak hours due to a fault with the platform screen doors at Bishan station. But how does ensuring safety for commuters indirectly cause inconvenience then? Safety Systems on MRT trains Our MRT trains are equipped … Continue reading How did a safe MRT system indirectly cause delays?