How do red light cameras work?

I live in Toronto, so basically today I went through an intersection when it was a green light, then the idiot F150 in front of me decides to stop and leave a huge gap, so I'm sort of more than halfway from the intersection but that idiot F150 stopped. I went through a green light, then when I stopped it... show more I live in Toronto, so basically today I went through an intersection when it was a green light, then the idiot F150 in front of me decides to stop and leave a huge gap, so I'm sort of more than halfway from the intersection but that idiot F150 stopped.

I went through a green light, then when I stopped it turned to yellow, then red, then the camera flashed.

I'm not sure if the camera may have caught me cause I was close to the F150 it may not have caught my plate.

Anyways if I get it I will fight it.
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