The Downtown Line was hit by a signalling fault early Wednesday morning, causing service delays from Bukit Panjang to Bedok.
The root cause of the full-day glitch on the Downtown Line, which was affected by a signalling fault on Thursday, has not been identified.
Ride-hailing firm Grab reported a technical issue with its app on Thursday morning, with other countries in the region similarly affected.
Commuters travelling on the Downtown Line faced delays in their Thursday morning commute due to a signalling fault.
Commuters on Downtown Line 3 - which officially opened its doors today - reported being 'stuck' at various stations, including Bedok North and Mattar station.
Commuters were hit by another round of train delays early Friday morning following a two-hour delay during the evening peak hour the day before.
Originally slated to open together with Downtown Line 2 in December 2015, the third entrance to the station will now be completed only by the end of the year.
According to operator SBS Transit on Thursday, water had damaged electrical components of one of the screen doors at Botanic Gardens station.
Downtown Line MRT services were delayed from the start of service up to lunchtime yesterday due to a platform door fault at Botanic Gardens.
The signalling fault was caused by a faulty platform door at Botanic Gardens station, The Straits Times has contacted SBS Transit for more information.
Despite slight rise in the number of major delays, the overall performance of the MRT network improved by 30 percent last year, said the Ministry of Transport.
Commuters tweeted that they had to wait up to 20 minutes for their train and large crowds were amassing along the line at stations like Bukit Panjang.