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Metro Morning host Matt Galloway interviewed Halton Regional Chair Gary Carr, Mississauga Mayor Hazel McCallion, and York Region's Chairman Bill Fisch on Friday about gridlock in the Greater Toronto Area.

When the on-air interview ended, Carr and Fisch stuck around to field your questions online. Replay the chat below to see what GTA residents wanted to know about gridlock.

CBC Toronto aired a series this week looking at the challenges the city faces as it works to improve transit and ease congestion on our streets and highways. If you missed the series, you can catch up online. Here are some key links: