I don't think it's common to blatantly run a red light. In fact, it's extremely frowned upon in Western society, to the point that 99% of people will wait for t

I don't think it's common to blatantly run a red light. In fact, it's extremely frowned upon in Western society, to the point that 99% of people will wait for the green signal even if it's the middle of the night and there's no-one around (compare that to, e.g. India, where I've heard that traffic signals are mere suggestions). But stretching the green past the yellow and into the red? That happens all the time, and I suspect it's the vast majority of what these cameras catch. People justify it because "oh, it was just a few seconds" or "but it was still yellow!".