Question Front door windows on a vehicle may be tinted to no more than: Answers 100 percent light blockage. Whatever looks good. 65 percent light blockage. 50 percent light blockage. Explanation Tinting or sun-screening material is permitted on side and rear windows. Front door windows may be tinted to no more than 65 percent light blockage. Take a FREE Practice Test Now This questions appears in the following tests: Missouri Practice Test