In Texas, the legal tint limit for cars depends on the type of window. The windshield must allow at least 25% of visible light transmission (VLT) above the manufacturers AS-1 line or top 5 inches, with less than 25% reflection. The front side windows must allow more than 25% VLT, while the back side and rear windows can be tinted to any darkness, including blackout privacy tint, provided the vehicle has dual side view mirrors. If these mirrors are not present, then rear window tint can only be a maximum darkness of 25% VLT. Red, amber, and blue tints are not allowed. Medical exemptions are available for those who need darker tint on their front windows due to a medical condition.