I've heard they only film when the light sequence turns yellow to when it turns green again. But the other day I saw footage from a camera showing an accident that occurred in the perpendicular lane of travel. The light the red light camera was enforcing was green. This was in Miami.

Then I read that several cattle thieves were apprehended when they were caught on a red light camera as well. Apparently several thousand requests by LEOs are made annually for traffic camera footage. The footage I've seen is insanely HD. Only what is uploaded to YouTube for the public has its quality reduced.

Thousands of cameras recording 24/7...that's a shitload of data! To the order of a gigabyte per second.

Does anyone know how long these companies store footage for? Are only some recording 24/7? They can no longer say they aren't - there is video out there disproving it.