The East-West Line has started running on the new Communications-Based Train Control signalling system, the second line to do so after the North-South Line.
SMRT's incoming CEO Neo Kian Hong joined Transport Minister Khaw Boon Wan yesterday in SMRT's first full-day trial of the new signalling system.
Live testing of the East-West Line's new signalling system will commence on the five Sundays between 29th April and 27th May.
More than 100 train drivers took part in a five-hour trial of an upgraded signalling system on both the North-South and East-West lines yesterday.
French firm Thales is to set up a simulation facility for East-West Line's signalling system before it is rolled out.
Commuters travelling between Tuas and Pasir Ris on the East-West Line will not have a smooth journey for a while, due to the fallout from last week's collision.
According to the LTA and SMRT, a software update to the new signalling system being tested on the North-South Line will be installed on Friday evening.
Yesterday's train disruptions, which affected tens of thousands of commuters, were blamed on a fault in a new signalling system being put through its paces.
Commuters should be prepared for more MRT delays as testing of a new signalling system for the North-South Line enters its fourth month.
There were two delays on the North-South Line on the first two days of June, following the start of SMRT's weekday signalling tests.
Rail operator SMRT says that all-day checks of the new signalling system on the North-South Line are necessary to 'work out teething issues'.
The goal is to eventually have train operations capable of running at intervals of as short as 100 seconds between each train.
The East-West Line is being equipped with the same signalling system as the North-South Line but it has yet to be fully installed for trials to be conducted.
All-day trials of the new signalling system on the North-South Line, as well as the operation of the first of 57 new trains, will begin on Sunday (16th April).
The complete switchover to the new signalling system was slated to take place at the end of last year but was delayed as authorities wanted to do more tests.
A new signalling system will be tested on the North-South Line on Tuesday night (28th March), all trains will stop for about 10 minutes at around 11:00pm.
The launch of an upgraded signalling system on the North-South Line, which will allow trains to run at shorter intervals, will be delayed to next year.
Train signalling issues may continue to cause service delays as upgrades to the system will only be completed in 2016 at the earliest.