Although trains are running along the line, a Twitter message issued by the TTC just after 6 a.m. said passengers should expect “longer-than-normal wait times for trains." Delays of up to 30 minutes were reported.
TTC spokesman Brad Ross said the problems relate to radio communication between trains and transit control. With the main system down, the TTC had to go to a backup system that slows that rate at which trains can leave the yard.
"Crews working to re-establish primary radio comms," Ross tweeted Friday morning. "Safety must override service."
In an interview on Metro Morning during Friday's difficult commute, Ross asked that passengers be patient and “leave yourself lots of time.”
“My best advice is if you can wait it out, we will get you where you need to go, but it will take longer," he said. "We we’re working very hard to get this fixed as quick as we can.”