Section 10.30.200 Tinted windows - front windshields, windows, or sidewings.

1. Prohibition. A person shall not drive a motor vehicle equipped with a windshield, sidewings, or side or rear windows which do not permit clear vision. A person shall not operate on the highway a motor vehicle equipped with a front windshield, a side window to the immediate right or left of the driver, or a sidewing forward of and to the left or right of the driver which is excessively dark or reflective so that it is difficult for a person outside the motor vehicle to see into the motor vehicle through the windshield, window, or sidewing.

2. Standard of transparency. “Excessively dark or reflective” means that the windshield, front side window or front sidewing does not meet the minimum standard of transparency requiring 70 percent light transmittance. Safety glazing materials or multiple glazed assemblies thereof intended for use at levels requisite for driving visibility in the motor vehicle shall show regular (parallel) luminous transmittance of not less than 70 percent of the light, at normal incidence, both before and after irradiation.

(a) A person suffering from a severe light-sensitive condition may be exempt from the standard of transparency if the need is documented by a physician. The exemption does not apply to a commercial vehicle.

(b) A passenger or operator of a motor vehicle who for medical reasons requires a front windshield, a front side window or a front sidewing with less than 70 percent but not less than 35 percent light transmittance may obtain a form to be signed by the person’ s physician.