So one million people? Vehicles? Both? Don't have to pay tickets? The number is larger than this because an immune vehicle will be lent out to a correctional officers son who wants to take some long trips on toll roads and bridges for a month (for example) If this son blows through tolls in other states (say Oregon and Washington State) it looks to me that he is immune too
If someone with such a plate blows by a patrolman in some states (like maybe Ohio), they’ll be stopped and detained until the vehicle’s registration and ownership can be verified. And, the ticket will be issued.
An Ohio Highway Patrol officer would ticket their own mother for going 10 over the speed limit. They mean business, and a bigwig from some hard-left legislature in another state isn’t going to be able to claim immunity.