Modern police dispatch systems already do this. The car automatically sends whenever the lights or siren are used, and it is flagged at the dispatch station if the car isn't on a call that authorizes that mode. I'm fairly sure Austin PD uses this.

> I wonder what the police reaction will be to the same tracking on police cars. Using their lights to get though red lights and traffic jams when there is no emergency etc will be nicely logged.

Body camera already demonstrate that (some) police will actively disable recording devices.

https://www.thedailybeast.com/baltimore-cops-turned-off-body...

Love the sentiment, but that suggests that the public has access to these tracking data. (We also need access to police emergency calls and locations, which we might already have, IDK.) I'd be quite surprised if the vehicle data would be made public.

Hell, even if specifically requested, you'd be "amazed" at how many times, if the information looks negative it will be "lost" or the camera will be "non-functional".

One department tried to claim that their cameras were "malfunctioning" in the majority of FOI / criminal cases where they were requested.