1.  SMRT and LTA are working with a team of experts from train manufacturer Alstom on the recent spate of signalling problems experienced on the Circle Line (CCL).

2.  To date, we have narrowed the problem to signal interference, causing intermittent loss of signal between trains and stations.

3.  We are working round the clock to restore service levels.  However, as the CCL runs underground, trackside checks and physical interventions can only take place after operating hours although backend system checks are being conducted throughout daylight hours.

4.  Commuters may potentially experience delays along the Circle Line today and are advised to factor in extra travel time to get to appointments on time.  As a precautionary measure, SMRT’s Operations Control Centre is being manned closely and additional staffing have been deployed on board trains for expeditious service recovery. More staff will also be deployed at stations to re-direct passengers, in the event that additional assistance is needed by those seeking alternative travel options.

5.  We apologise for the inconvenience and seek all commuters' understanding as we work hand in hand with all parties to resolve the issue.