I always roll-down my front windows as the cop approaches.. for his safety.. or, just avoid getting pulled-over in the first place..
I never heard of any law in '99 that allowed tint on the front..
I was under impression that you can have 70% on front, i had 50% and didn't even think anything when cop would go by. Finally motor that was looking for very quick ticket ticketed me. Guess time to remove, get it signed off and put it back on...maybe this 35% -- i am not a lawyer but I do play one on the internet