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 Kansas, window tint laws are regulated under the Kansas Statutes, specifically K.S.A. 8-1749a. These laws specify the amount of visible light transmission (VLT) allowed for vehicle windows. Kansas law requires a minimum VLT of 35% for the front side windows and a minimum of 35% for the back side and rear windows. The windshield may have non-reflective tint on the top six inches only. The law also addresses visual light reflection (VLR), stating that the front side windows must not have a reflectivity greater than 35%. Kansas does provide exemptions for certain vehicles, such as limousines, and for individuals with a medical condition that requires protection from the sun, as certified by a licensed physician. If a driver is cited for illegal window tint in Kansas, it is typically considered a fix-it ticket, which is a correctable violation. The driver must rectify the issue within a specified period, pay a fine, and obtain verification from an authorized person, such as a local police officer. Failure to comply can result in additional fines, a mark on the driving record, and potentially a warrant for arrest if the court's requirements are not met.