We thank Mr Gabriel Cheng Kian Tiong for his letter (Train delays need to be better managed; June 6).
In our June 2 statement, the Land Transport Authority (LTA) and SMRT Trains had explained the signalling faults that occurred on June 1 and 2.
The first was caused by a glitch in the server used to manage train schedules.
The following day, a fault in the signalling equipment known as the Movement Authority Unit resulted in slower train movement between Kranji and Admiralty stations.
During both incidents, SMRT Trains deployed about 700 additional employees to assist commuters and to manage the crowd at stations.
TransCom officers, the Traffic Police and LTA officers managed road traffic so that commuters could quickly resume their journeys using alternative modes of travel.
Under the current state of heightened security alert, security measures have been stepped up.
We urge commuters to also stay vigilant and report any suspicious activities to our ground staff.
To test our new signalling system, full-day tests on weekdays cannot be avoided as the tests allow us to surface and resolve problems expeditiously.
We seek commuters' understanding and patience as we continue testing the new signalling system.
Deputy Chief Executive (Public Transport, Policy and Planning)
Land Transport Authority
Lee Ling Wee
Chief Executive Officer