Why not allow the streetcar to move onto the oncoming track? Of course car traffic would need to watch out.Yet the TTC won't build any passing track, allowing the 1/2 empty streetcar in behind to jump ahead. There are spots downtown w/no parking (think Queen by the Eaton Centre, where you could 4-track and allow streetcars to pass each other.
Here's a passing tracking in old Chicago.
And a Seattle passing track in the 1990s.