Severe limits on window film light transmission and reflectance percentages continue to surface in a number of states. It is important to constantly remind state legislators to advance the industry standard of not less than 35-percent light transmittance on all windows other than the windshield, and oppose measures that would unreasonably limit the use of window tint materials.
However, not every bill aims to limit the use of window tint. A bill directing the California Air Resources Board to reduce greenhouse gas emissions through a reduction in motor vehicle cabin temperature is currently moving through the California legislature. The cabin temperature of a vehicle can be lowered through the use of window tinting materials. Such a directive by the legislature would signal to regulators that tinting should be considered as a solution to reduce the greenhouse gas emissions created when drivers must idle their cars in California while waiting for them to cool down. Other states have introduced measures to provide exceptions to the limits on vehicle window tinting for drivers with sensitivity to light.