O-Train Line 1 resumed normal service shortly after the morning commute on Monday after an “operating issue” on the line in the east end. OC Transpo reported the O-Train was only operating on the eastbound platforms at Tremblay Station shortly before 8:30 a.m. The transit service would only say there was an “operating issue” with Line 1. Regular train service resumed just before 10 a.m., according to OC Transpo. The issues with Line 1 come after issues shutdown service on Line 4 to the Ottawa Airport twice last week. Line 4 service was temporarily suspended for two hours on Saturday due to a switch issue. There was also a technical issue with Line 4 on Friday.