The basis for most of the window tinting laws was a need to provide protection for enforcement personnel.  Every state in the United States has some type of regulations regarding which areas can be treated and what percentage of darkness is allowed in a vehicle.  Some states also limit the types of film that can be used, such as requiring that no vehicle use mirroring films.  Each state has various guidelines to follow even though they tend to vary from one state to another.  The only way to know for sure what each state’s guideline might be would be to contact local law enforcement, department of motor vehicles, the department of transportation and other governing bodies within the state of residence. This is very important because there are often steep fines and penalties involved with failing to adhere to the guidelines set forth.  Being able to clearly see inside makes it much safer for enforcement officials to approach a vehicle. 

Of course, there are other reasons why states would set forth window tinting laws, such as driver distraction.  Many times, a coating on the glass can reflect light to the point that it might blind oncoming traffic.  This could cause a horrific accident and is definitely preventable.  A mirrored reflection can actually be as bright as a light being shined directly into the eyes of an oncoming driver.  Even though this is a momentary flash, it could be enough to cause the driver to veer off of the road or worse, hit another vehicle.

Another reason for window tinting laws is to ensure that drivers are able to see out of their vehicles once the film is put into place.  Films come in different percentages and these numbers represent the amount of light that is allowed to come through the film.  If too much light is blocked, it could be difficult for the driver to see through the glass.  This could have the same effect as a blind spot and cause an accident.

Motor vehicles are the most likely targets of window tinting laws.  Cars, trucks, vans, semis, buses and other types of transportation have guidelines that they must follow for all of the obvious reasons.  There are a few states that allow no product at all on the glass. 

Currently, there is no window tinting laws concerning homes or businesses.  Business and home owners are free to make their glass as dark as they would like, so many do.  There are clear benefits for applying film to the glass, such as keeping out the harmful sunlight rays that cause cancer.  Other benefits include protection for furniture, art, such as paintings and priceless heirlooms which are hand woven, rugs and carpeting.  Another benefit is making sure that the rooms of the home or business stay cooler without having to turn the thermostat on the air conditioner up.  This is done through applying solar films that limit the amount of infrared light that comes through and causes the area to heat up.