Sunscreen devices can be applied to the side windows to the right and left of the driver if the following conditions are met.

1. Sunscreen devices, when measured in combination with the original glass, have a light transmittance value of 25% or more.
2. Sunscreen devices, when measured in combination with the original glass, have a luminous reflectance value of 25% or less.

These windows are completely exempted from regulation under the Texas Transportation Code.

A sunscreen device can be applied to the rear window of the vehicle if the following conditions are met.

1. If a motor vehicle is equipped with an outside mirror on each side of the vehicle that reflects to the vehicle operator a view of the roadway for a distance of at least 200 feet from the rear of the vehicle then there are no restrictions regarding the sunscreen devices applied to the rear window.

If a motor vehicle is not equipped with such mirrors then the rear window must meet the following standards:

1. Sunscreen devices, when measured in combination with the original glass, must have a light transmittance value of 25% or more.
2. Sunscreen devices, when measured in combination with the original glass, must have a luminous reflectance value of 25% or less.

Below are the exemptions to Window Tint requirements.

1. Vehicles used to transport passengers on a regular basis for a fee, (i.e., taxi, limousine, and buses).
2. Vehicles that are maintained by a law enforcement agency and used for law enforcement purposes.
3. Vehicles used by persons with medical permits. Drivers of these vehicles must present a letter of authorization from the Texas Department of Public Safety to gain this exemption.

Motorists may request a medical exemption from the Texas Department of Public Safety by submitting an application and a signed statement or prescription from a licensed physician or licensed optometrist. This statement should state that it is his or her opinion that the exemption is necessary to safeguard the motorist’s health.

Medical Exemption Application

Note: The medical exemption allows motorists to place a darker tint on the front side windows and the upper portion of the front windshield (top 5 inches or above the AS-1 line, whichever is less). The exemption does not, however, allow a motorist to place a sun screening device on the rest of the front windshield.

The language of 547.609 of the Texas Transportation Code was interpreted by the Department as requiring one label for each vehicle regardless of how many windows had sunscreen devices applied to them.  As a result, in Chapter 21 of the Texas Administrative Code (TAC), TXDPS requires that only one label be attached to the rearmost, bottom corner of the driver’s side window of the vehicle.  The passenger side is optional.  The content of the label shall include “Complies with TRC Chapter 547” (or “Complies with TTC 547.613 (b)” which is currently utilized).  Any other information on the label, including the installer’s name, is optional.