SMRT will be introducing flood mitigation measures at four locations on the East-West Line to prevent a repeat of October's flooding incident.
An east-bound stretch of the East-West Line (EWL) was affected by a track fault at Redhill station on Wednesday morning.
The Land Transport Authority is taking steps to ring-fence train tracks to make it harder for intruders to gain access.
Train operator SMRT has removed the stalled train in Friday's incident at Redhill station from service to perform more thorough checks on its doors.
An SMRT train stalled at Redhill MRT station on Friday night after an object jammed one of its doors, forcing passengers to disembark.