4 DELAYS IN 3 WEEKS
In the morning: The disruption on the Circle Line started with a signal fault, which operator SMRT tweeted about at 7.37am. Later, services between Marymount and Botanic Gardens MRT stations were disrupted.
The disruptions then extended to Serangoon and Botanic Gardens MRT stations.
At 10.27am, SMRT tweeted that normal train service had resumed.
A joint statement by the Land Transport Authority (LTA) and SMRT said preliminary investigations found that the cause of the disruptions was interfering signals that disrupted the Circle Line's own signalling-related communications.
The Circle Line had similar signal faults in early September this year, which resulted in slower trains and longer waiting times.
In the evening
SMRT tweeted at 5.48pm that there was a second stoppage on the East-West Line, with no train service from Queenstown MRT station to Outram Park MRT station.
The cause of the disruption was because of a train fault. Train service resumed at about 6.20pm.
A train leaving Jurong East MRT station developed a signal fault at about 6.50am and caused delays of up to 40 minutes.
A west-bound train near Dover station had its brakes stuck during the morning rush hour, which resulted in a longer travelling time from Queenstown to Jurong East stations.
A track fault caused delays of up to 20 minutes between Tanah Merah and Bugis MRT stations.