Legal window tint in Pennsylvania must let at least 70% of visible light pass through the glass on every window of a passenger car. Trucks, SUVs, and vans follow the same 70% rule on the windshield and front side windows, but have no darkness limit on the rear side windows or back glass. The standard is called Visible Light Transmittance, or VLT, and it comes from 67 Pa. Code Chapter 175, Subchapter O.1Pennsylvania Code and Bulletin. 67 Pa. Code Subchapter O – Vehicle Sun Screening Devices
How Dark You Can Go by Vehicle Type
VLT is the percentage of visible light that passes through the glass and any film applied to it, measured together. Higher percentage, more light, clearer window.
Sedans, Coupes, and Hatchbacks
For passenger cars from model year 1998 or newer, every window has to meet the 70% minimum: windshield, front sides, rear sides, and rear window.1Pennsylvania Code and Bulletin. 67 Pa. Code Subchapter O – Vehicle Sun Screening Devices Because most factory glass already sits around 70–80% VLT on its own, the legal aftermarket film for a modern sedan is barely perceptible.
Trucks, SUVs, Vans, and Multipurpose Vehicles
The windshield and front side windows still need to hit 70% VLT. The rear side windows and rear window have no VLT requirement at all.1Pennsylvania Code and Bulletin. 67 Pa. Code Subchapter O – Vehicle Sun Screening Devices That is why so many SUVs and pickups legally run very dark back glass.
Windshield and Sun Strip Rules
Below the top band, the windshield has to meet the same 70% VLT standard as the rest of the front glass. At the top, Pennsylvania allows a transparent sun screening product, but only if it does not extend more than three inches down and does not cross into the AS-1 area of the glass.1Pennsylvania Code and Bulletin. 67 Pa. Code Subchapter O – Vehicle Sun Screening Devices The AS-1 line is a mark stamped into the glass by the manufacturer identifying the zone where federal optical clarity standards apply. Note the word “transparent.” A dark strip across the top of the windshield is not legal, even inside the three-inch band.
Why Factory Glass Changes the Math
The 70% rule applies to the finished combination of glass plus film, not the film alone. You multiply the two VLT percentages together. Factory glass that transmits 75% of light, paired with a film rated at 90%, yields roughly 67.5% — which fails.2Pennsylvania Code and Bulletin. Rules and Regulations – Vehicle Sun Screening Devices A film sold as “barely there” can still put you over the line once the factory tint on your car is factored in. Have the installer measure your bare glass with a tint meter before picking a film.
Reflective and Mirrored Films Are Prohibited
Pennsylvania law prohibits sun screening material that prevents someone from seeing into the vehicle through the windshield or side windows.3Pennsylvania General Assembly. 75 Pa. C.S. 4524 – Windshield Obstructions and Wipers The regulations also treat luminous reflectance as a factor that can put a vehicle in violation. If an officer cannot see through your side windows from the outside, the tint is illegal regardless of what the VLT meter reads. Metallic films in gold, silver, chrome, or copper tones are effectively off the table.
Medical Exemption
Pennsylvania has a medical exemption, and it is narrower than most drivers assume. It authorizes colorless UV-filtering material only. It does not let you install darker tint than the law otherwise allows.4Pennsylvania Code and Bulletin. 67 Pa. Code 175.265 – Exemption Provisions The film blocks UV rays while still passing the required amount of visible light.
To qualify, the vehicle owner, or a household member who regularly drives or rides in the vehicle, must have a physical condition that PennDOT, in consultation with its Medical Advisory Board, has determined justifies the exemption.3Pennsylvania General Assembly. 75 Pa. C.S. 4524 – Windshield Obstructions and Wipers A licensed physician or optometrist has to certify the condition to PennDOT. The application uses a form furnished by the department; to request it, call PennDOT’s Medical Unit at (717) 787-9662.5PennDOT. Vehicle Window Tint Fact Sheet
Keep the certificate of exemption in the vehicle at all times and show it to any officer who asks.4Pennsylvania Code and Bulletin. 67 Pa. Code 175.265 – Exemption Provisions You will also need it when the vehicle goes in for annual inspection.
Mirrors When the Rear Window Is Tinted
If any sun screening is applied to the rear window, the vehicle must have both left and right outside rearview mirrors, each with a reflective surface of at least 19.5 square inches.1Pennsylvania Code and Bulletin. 67 Pa. Code Subchapter O – Vehicle Sun Screening Devices The exception is tint applied solely above the AS-1 line on the windshield. Modern vehicles come with dual mirrors from the factory, so this mostly matters for older trucks with a single driver-side mirror.
Enforcement and Penalties
If an officer suspects your tint is over the limit, you can be stopped and cited on the spot. Officers use handheld light-transmittance meters that give an immediate percentage reading. A 2019 report indicated Pennsylvania State Police were writing close to ten window-tint citations per day statewide.6Pennsylvania General Assembly. Vehicle Window Tint During State Vehicle Inspection
Window tint is not currently checked during Pennsylvania’s annual safety inspection.5PennDOT. Vehicle Window Tint Fact Sheet A vehicle can pass inspection with illegal tint and still get cited every time it is pulled over. That gap gives some drivers a false sense of security.
A tint citation is a summary traffic offense, and the fine varies by jurisdiction. In Philadelphia, both the police department and the Parking Authority can issue a $100 fine on moving or parked vehicles.7City of Philadelphia. Clarifying Tint Enforcement – Navigating Philadelphia’s Regulations Elsewhere, fines with court costs usually land in the $100–$150 range. On top of the ticket, you will need to pay to remove the illegal film to avoid being pulled over again. Professional removal runs roughly $25 to $200 depending on how many windows are involved and how hard the adhesive fights back. Re-tinting within legal limits is another cost on top of that.
Picking a Film That Stays Legal
Because Pennsylvania caps passenger cars at 70% VLT on every window, the practical decision for most drivers is not how dark but what material. A few notes tied to the legal limits:
- Dyed film is the cheapest option. It absorbs some heat and reduces glare but offers minimal UV and heat rejection, and tends to turn purple after a few years. Reasonable on the rear glass of an SUV or truck where darkness is legal; expect faster degradation.
- Carbon film is a mid-range choice. It blocks up to 99% of UV, rejects 40–50% of infrared heat, holds its color, and does not interfere with electronic signals.
- Ceramic film is the premium option. It blocks up to 99% of UV, rejects 60–70% of infrared heat, keeps color stable for years, and contains no metal, so GPS, cell service, Bluetooth, and keyless entry work normally.
- Metallic film rejects heat well but contains metal particles that can disrupt radio-frequency signals, and given the ban on reflective tint, it also risks violating the luminous reflectance standard. Most installers steer customers to carbon or ceramic.
Professional installation for a standard sedan generally runs $200 to $800 depending on film type, with ceramic at the top end. Removing existing tint before application adds $50 to $200. Ask about the warranty: reputable manufacturers cover bubbling, peeling, cracking, and purple discoloration, sometimes for the life of the film, though coverage usually applies only to the original purchaser and requires professional installation.