I can tell you how I handled a traffic stop, you can take from it what you will.
First, some background. In my job I was authorized to carry, and in fact was required to do so for a time. I have a badge but was not uniformed unless a suit and tie is a uniform. I was driving my personal vehicle. My registration had expired and I was aware of that. The reason for the expired tag was actually an administrative error by the State and I had the relevant paperwork to show that, and I was, in fact, returning from addressing that fact.
So I was driving, lawfully, in the next jurisdiction over from the one where I work and am well known. I got pulled over. I pulled out of traffic, parked immediately, put on my hazard lights, shut off my engine, rolled down my window, put on my dome light (it was twilight, and I placed my hands on the steering wheel with my keys dangling from my finger. A very young, quite attractive Deputy approached. She asked if I knew why she had pulled me over. I stated I did not care to speculate. she told me my registration tag was expired. I told her I could explain and could show her documentation to back up my explanation. She asked for my license and registration. Before moving I told her my license was in my wallet in my back pocket and my registration was in the glove box. I told her I would have to reach for each and did I have permission to move. She seemed nervous but said that I did. Before moving I told her that the glove box also contained a handgun and would she feel more comfortable securing me and getting the registration and POI herself. She drew her weapon and asked me to get out of the vehicle. I complied. I leaned against my truck, spread my legs without request, and placed my hands behind me. She cuffed me. It was sexy. She retrieved my weapon, paperwork, and badge case, also in the glove box. We then talked. Everything was cleared up in a matter of moments. We both went about our business safely. Some years later I had cause to interact with her in court. She remembered the interaction. She stated she appreciated the way I handled the matter.