How to Overturn a Traffic Violation Ticket

An ambulance radiates a traffic violation free zone of 200 meters around it in every direction as it's barreling along. How would they know though? If you like ran a red light, you had to break a red light to get out the way or something to let an ambulance through - is there some automated way for them to know that was okay? I don't know. Sure people will know, but someone has to have been in that situation of getting a ticket for crossing a red light to get out of the way of an Ambulance right? This has to have happened somewhere in an automated system. It seems like a lot of faffing. And also if you