Streetcars are meant to operate alone. Being that they're limited to where their rails take them and there are very few places in the system where one can overtake another, it does no good to have one streetcar riding another's bumper outside of unusual situations, such as the crush-load crowds travelling from Bathurst station to the Canadian National Exhibition every August. That doesn't mean that it doesn't happen - far from it. Traffic snarls on streets shared between streetcars and automobiles tend to amplify themselves, so it's not uncommon to be waiting for considerably longer than the "ten minutes or less" service frequency posted during the daylight hours - I know from experience.
Every once in a while, though, something major will foul up a line, and full-on convoys are the result. Today's photograph was taken just west of the intersection of Dundas Street and Parliament Street, and no less than five streetcars make up this chain. It's almost beautiful, in its way, but I wouldn't want to be waiting for a streetcar anywhere further up the route.
I, the copyright holder of this work, hereby release it into the public domain. This applies worldwide. In case this is not legally possible, I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.