Fun fact: in some municipalities you can FOIA for the GPS records of police vehicles. Here's Chicago Police's. They removed 0-15mph for, erm, privacy reasons.... but it's not the worst.
Have a glance:
https://www.dropbox.com/scl/fo/hj4jtcag2i9qvl4sj6mg2/AF6c9r7...
That's indeed a very fun fact!
The speed limit in neighborhoods is usually 25, so... 0-15mph limiting seems useless? I imagine some level of police <-> home address / general home area is in that data.