in maryland... for trucks and SUV's tinting the rear window is fine... for as dark as you want. got 4 dooors, or CC windows? dark as ya want. front doors have a limit at 37.5% but everybody around here gets 20%.... i got 15% on my white truck. had it for 3 years and never got pulled over for it... until a deputy pulled me over at 0130... yes, middle of the night to say i had tint too dark.
i've gotten a fix it ticket for the tint as well, but i've never had to take it off. i have a trauma induced condition similar to shackleford. my right eye doesn't register to filter the light in high levels of light.
so now i rock the 5% on 3 sides and the limo tint eyebrow on the windshield. altho that comes down 2in below the bottom of the rearview mirror.
but i think its amusing to be right when the cop is telling me i have to remove the tint when they have the letter written by my retina specialist, in their hand... and don't read it... but we're sitting on the side of hte road for 10 mins going back and forth about if i need to remove my tint or not.