I happen to do some work for the guy who trains all the Maryland State Troopers how to drive/not drive their cars. I asked him about the legality of window film on vehicles with historic tags and he didnt know off the top of his head. So he looks into it and calls me a week later, and says that window tinting is not part of the safety inspection, therefore legally you can go as dark as you want. There was no real clear answer in the handbook, so he called around to some higher ups, and thats what they said so....if you're historic / your safe! copcar.gif