relative to permissible window tinting on motor vehicles.

HB 1178 allows vehicle owners in New Hampshire to install aftermarket tinting on front side windows (left and right of the driver) if the tint permits at least 35% of light to pass through. It also creates a medical exemption, enabling individuals with qualifying health conditions to apply for a waiver permitting darker tint, provided they submit medical certification from a licensed provider and the tint still meets the 35% standard. The commissioner of safety will establish testing procedures and review waiver applications, including consulting a medical review board if needed. The law takes effect January 1, 2027.