I had a local cop try and write me up for a ticket when I was younger, it was dark, stupid dark, 5% all the way around and a 8" banner on the front windshield. You couldn't see me inside if I was pressed to the window.
I told him I wasn't aware Oklahoma HAD tinting laws, thought that was the reason all the officers drove around with 5% on theirs, figured if they could do it, so could I. He tore up the ticket and told me to get out of his car. Never got stopped for it since.
Except Texas, Texas hates dark tint on the fronts. Told me to keep the windows down if I didn't want to remove it, nice enough guy. I just have to see and they have to be able to see me, so easy peasy.