In Texas Tint laws and State inspections laws differ from one state to another state.
In the state of Texas Tint limit is 25% or above. This means the darkest tint to have safely would be 25% light emission. The 20% is  the legal limit but from time to time it is argued that 30% is the legal limit. This limit is for each vehicle on the road.

Texas Laws
Section 547.613 of Texas transportation the Texas Transportation Code makes it a misdemeanor to operate a vehicle with an object or material attached to the windshield, rear, or side windows that obstructs or reduces the driver’s visibility.

Sun-screening devices cannot be applied until following conditions are met.

1. Sun-screening devices must be applied above the AS-1 line.

2. Sun-screening devices may NOT be red, amber, or blue in color.

3. Sun-screening devices, when measured in combination with the original glass, must have a light transmittance value of 25% or more.

4. Sun-screening devices, when measured in combination with the original glass, must have a luminous reflectance value of 25% or less.

5. A clear (un-tinted) UV film is allowed anywhere on the front windshield without a medical exemption being required.


Thanks goes to the Texas Department Of Public Safety and Solar Control Films  for useful and helpful information.