Texas allows window tint on your car, but the darkness and placement are regulated by state law
Texas permits window tinting on vehicles, but the law sets specific limits on how dark the tint can be and where you can place it. The darkness is measured as visible light transmission (VLT) — the percentage of light that passes through the tint. The darker the tint, the lower the VLT percentage. Texas law allows different tint darkness for different windows, and some windows have no restrictions at all.
The rules explore to all vehicles registered in Texas, whether you tint the windows yourself or have a shop do it. If your tint is darker than the law allows, you can receive a traffic ticket and be ordered to remove it. Understanding the specific limits for each window helps you avoid a citation and know what to expect if you already have tint installed.
Key Takeaways
- Texas law allows any darkness of tint on the windshield above the manufacturer's AS-1 line, and no tint restrictions exist for rear windows or the rear windshield.
- Front side windows must allow at least 25% of light through (VLT of 25% or higher), and back side windows must allow at least 25% of light through as well.
- A police officer can measure your tint with a device called a tint meter, and if it fails, you will receive a ticket and a notice to remove the tint.
- Tint removal is the only way to resolve a citation — there is no waiver or exemption process for non-medical reasons in Texas.
Windshield tint rules in Texas
Your windshield can have tint of any darkness above the AS-1 line, which is the manufacturer's line marked on the top of the windshield. The AS-1 line is usually about 4 to 6 inches below the top of the windshield, though the exact location varies by vehicle. Tint above this line does not have to meet any darkness requirement — you can tint it as dark as you want.
Below the AS-1 line, your windshield cannot have any tint at all. This rule exists because the windshield is your primary view of the road, and tint below the line would obstruct your vision. If you have tint below the AS-1 line, you are in violation of Texas law and can be ticketed.
Front and back side window tint limits
Both your front side windows (the windows next to the driver and front passenger) and your back side windows (the windows behind the front doors) must allow at least 25% of light through. This means your VLT must be 25% or higher. A VLT of 25% is fairly dark — it blocks 75% of the light — but it is the darkest you can legally go on these windows in Texas.
If you have tint on your front side windows that is darker than 25% VLT, you are violating the law. The same rule applies to back side windows. A tint meter, which police officers carry, measures the exact VLT and determines whether your tint is legal.
Rear window tint has no darkness limit in Texas
Your rear windshield (the back window of your car) can have tint of any darkness, including complete blackout tint. Texas law does not restrict how dark the rear window tint can be. This is one of the most permissive rules in the state — you can tint your rear window as dark as you want without violating state law.
However, some local ordinances or city codes may have additional rules, so it is worth checking with your city or county before having a rear window tinted extremely dark. In most cases, though, rear window tint darkness is not regulated in Texas.
How police measure tint and what happens if yours is too dark
A police officer who suspects your tint is too dark will use a tint meter to measure the VLT of your windows. The officer places the meter against the window from the outside and takes a reading. If the reading shows your tint is darker than the legal limit for that window, you will receive a traffic ticket.
The ticket will cite Texas Transportation Code Section 502.409, which is the statute that governs window tint. You will be ordered to remove the tint within a certain timeframe — usually 10 days. If you do not remove it, you can receive additional fines or citations. The only way to resolve the ticket is to remove the tint and have the officer or a court verify that it has been removed.
Medical exemptions for darker window tint
Texas law allows a medical exemption for window tint that is darker than the legal limit. If you have a medical condition that requires protection from sunlight — such as lupus, porphyria, or severe photosensitivity — you may be able to tint your windows darker than the law normally allows.
To obtain a medical exemption, you must have a letter from a licensed physician stating that you have a medical condition requiring darker tint. You should keep this letter in your vehicle at all times. If you are stopped by police, show them the letter and your physician's documentation. Without this documentation, you will still be cited for illegal tint, even if you have a legitimate medical reason.
The exemption does not mean you can tint your windows as dark as you want — you still need a physician's letter, and the officer has the right to verify the exemption. It is a good idea to contact your local police department or the Texas Department of Public Safety to ask what documentation they require before you have the tint installed.
Aftermarket tint versus factory tint
Texas law treats aftermarket tint (tint you add after buying the car) and factory tint (tint that came with the car from the manufacturer) the same way. Both must meet the same darkness limits. If your car came from the factory with tint that is darker than 25% VLT on the front or back side windows, that tint is still legal because it was installed by the manufacturer.
However, if you add aftermarket tint that is darker than the legal limit, you are violating the law. The source of the tint does not matter — only the darkness level. If you are unsure whether your factory tint is legal, you can have it measured with a tint meter at a tint shop or by a police officer.
Frequently Asked Questions
Can I tint my windshield below the AS-1 line?
No. Texas law prohibits any tint below the AS-1 line on your windshield. The AS-1 line is the manufacturer's line marked on the top of the windshield, usually 4 to 6 inches from the top. Tint above this line is legal with no darkness limit, but tint below it is a violation.
What VLT percentage do I need for front windows?
Your front side windows must have a VLT of 25% or higher, meaning they must allow at least 25% of light through. This is the darkest legal tint for front windows in Texas. A tint meter measures the exact percentage, and police use this device during traffic stops.
Is there a fine for illegal window tint in Texas?
Yes. A ticket for illegal window tint is a traffic violation in Texas. The fine amount varies by county and court, but you will also be ordered to remove the tint. If you do not remove it within the timeframe given, you can receive additional fines or citations.
Do I need a medical exemption letter with me while driving?
Yes. If you have a medical exemption for darker tint, you should keep your physician's letter in your vehicle at all times. If a police officer stops you, show them the letter. Without documentation, you will be cited for illegal tint even if you have a legitimate medical reason.
Can I get a ticket for factory tint that is too dark?
No. Factory tint installed by the manufacturer is legal regardless of darkness. Texas law assumes the manufacturer complied with regulations. Only aftermarket tint that exceeds the legal darkness limits can result in a ticket.