In regard to the OP's question, I would say that a handicap plate would be the way to go. But if you don't want to take advantage of what that entails, for whatever reason, or simply just don't get one, I'd say just inform the officer if you think getting out will be an issue.
My personal experience with LEOs:
I was coming home late at night going through a town in the rain on my 17th birthday. Well my sunglasses fell off the visor, and I grabbed them as I started to hydroplane. I swerved a bit, and the friendly neighborhood cop didn't care for that. I was about a mile further down the road before I noticed him behind me.
I pulled over as soon as I saw. He came up on the drivers side, but looking in my window, he saw a airsoft M4 under the seat. Scared the piss out of him. He hauled me and my buddy out at gunpoint. Tossed me in his backseat, and my buddy in his backups car. They searched and realized it was a toy. Charged me with reckless driving and evading.
DA dropped the evading charge through lack of evidence and pressure from my lawyer, and I ended up pleading guilty to careless drivng.
Back at the station though, me and LEO both had a good laugh, cuz we both had a good scare. I had no idea that gun was still there, and it was under the seat far enough to hide the orange tip.
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