My main issue with members increasing the tint on side windows and front windshield is when it is so dark that I can't see the driver. Ever come to a 4 way stop? Maybe it is me - but I want to make sure the driver isn't looking at his/her phone, etc. and see's me when it is my turn to leave the stop sign. My biggest fear is the driver with dark tinted front/side window and real dark windshield will just pull out without looking. I normally flash my lights to let the driver with dark windows to just go since I can't see him/her. Just my 2 cents.