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.
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.
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 North-South Line stood still for 10 minutes for SMRT's second trial of a new signalling system during passenger service hours on Thursday night.
Train signalling issues may continue to cause service delays as upgrades to the system will only be completed in 2016 at the earliest.