All states have traffic laws that limit the amount of window tint on motor vehicles—often by specifying the amount of visible light transmission (VLT) that is required. VLT is the amount of light that is transmitted through the window and into the vehicle. For example, a 70%VLT means that 70% of light will pass through the window and 30% will be reflected. Thus, a lower VLT indicates a darker film or tint.

Another term to know is visual light reflection (VLR)—which is the opposite of VLT. VLR is the amount of solar energy that is reflected off the glass and away from the inside of the vehicle.

In most states tickets or citations for illegal window tint are known as fix-it tickets and the ticket or citation will indicate that it is a correctable violation of traffic laws. For example, if you fix the window tint problem within the required period, pay a small fine, and get the signature of an authorized person (a local police officer) the court may dismiss the ticket.

But if you fail to fix the window tint problem within the required period you must pay the fine for the violation and you may be issued another ticket that will be part of your driving record. And if you fail to pay the ticket or appear in court on the hearing date the court may issue a warrant for your arrest.

Window tint laws vary from state to state and some states have exemptions for certain vehicles such as limousines and recognize medical exemptions when the driver has a written statement from a licensed medical doctor, ophthalmologist, or optometrist.

In Georgia, the window tint law is outlined in O.C.G.A. § 40-8-73.1, which specifies the amount of light that must be allowed to pass through car windows. The law mandates that the front side windows must allow for at least 32% visible light transmission (VLT) with a tolerance of plus or minus 3%. The rear and back side windows can have any level of darkness. The law also requires that the window tint on the front side windows must not be more than 20% reflective, and there should be no metallic or mirrored appearance. Additionally, the front windshield can only have non-reflective tint applied to the top six inches. Georgia recognizes medical exemptions for individuals who require a lower VLT due to a specific medical condition, and these individuals must carry documentation from a licensed physician. Violations of the window tint law are considered misdemeanors and can result in fines and other penalties. If a driver receives a citation for illegal window tint, it is typically a fix-it ticket, which means the driver can have the tint corrected to comply with the law, pay a fine, and potentially have the ticket dismissed.