I think it is standard procedure for police to call in the license plate number before approaching a vehicle.
I think it may be standard procedure before even pulling someone over.
I’ve had my plates run a couple of times.
I wasn’t violating traffic laws so I wondered if the LEO was looking for a car matching the description of the one I was driving, or checking to see if I had any DWIs. Because I wasn’t violating any traffic laws. I won’t tell you how I know that last one’s done.