What is this?Watch
Could also be a motion sensor set on the pavement so that if the crossing button is pressed but it doesn’t sense someone, it doesn’t beep
To OP: you can't accidentally run a red light if you're paying attention to what you're doing when you're behind a wheel, it takes a conscious effort to take your attention away from the road. You were purposefully doing something that led you to miss the light, break the law & place others in danger.
Of course, no one wants to admit not paying attention to both the signage and the lights.
(PS. It's a sensor but that doesn't mean there wasn't a camera 2ft out of frame)