Toronto Police Services are currently handing out warnings to drivers and cyclists who fail to stop for open streetcar doors.
I’ve seen some people on bikes coast by open doors in the hopes of passing streetcars and getting ahead of traffic. While illegal this behaviour is also incredibly rude. People often rush when leaving or trying to catch streetcars and even a small collision with one of these people is going to completely negate the few seconds you’ve saved trying to pass a loading streetcar.
My advice, stop at the rear of the streetcar and position yourself in the middle of the lane. Anxious drivers are going try to blow past a streetcar once those doors close and you do not want to be caught in the squeeze.
Completely unrelated photo, although it involves cyclists and a streetcar during a 2007 Critical Mass, by Leanne Eisen via the BikingToronto Flickr Pool