That's what we always called it. Rolling the Gold to identify ourselves as police officers. There was nothing nefarious about it. In the presence of an officer you did not know, you identified yourself to put him or her at ease.
Evidently, the rules have changed. It seems that the Chief of Police of Tampa was recently pulled over by a Pinellas County Deputy for a minor infraction. She identified herself as a police officer and was allowed to proceed. When I say minor, she didn't have a license tag on her golf cart. That is minor.
I never liked giving traffic tickets, so when I rolled out the citation pad, the time for talk was over. In my time as a road cop, I probably never wrote more that two dozen tickets. I made a bunch of traffic stops, but I didn't write many tickets. If everything seemed reasonable, I'd let the violator go.
But, in this case, it seems like something that broke the camel's back. This violation seems so minor that it should not even have elicited conversation at the station coffee pot.