Window tinting is a popular vehicle modification in Tennessee for privacy, comfort, and sun protection. State law sets specific limits on tint darkness and reflectivity, and not following these rules can lead to fines or other penalties. Even factory-installed tints should be checked against Tennessee’s standards.
Tint Darkness Limits
Tennessee law measures window tint darkness using visible light transmission (VLT), the percentage of light passing through a window. For passenger cars, the front side windows, back side windows, and rear window must all allow at least 35% VLT.1Justia Law. Tennessee Code § 55-9-107 (2024) – Tinted Motor Vehicle Windows
This 35% VLT standard includes both factory-installed tint and any aftermarket films. Any added tint must not cause the total VLT to fall below this legal minimum, as outlined in Tennessee Code Annotated section 55-9-107.
Windshield Tint Standards
Windshield tinting rules are stricter to ensure driver visibility. Non-reflective tint is allowed on windshields only above the AS-1 line (a manufacturer’s mark on the glass) or within the top six inches, whichever area is larger.
This tint must be non-reflective to prevent glare. There isn’t a specific VLT percentage for this windshield area. Drivers need to identify the AS-1 line or measure six inches from the top to comply.
Reflectivity Restrictions
State law also limits window tint reflectivity to prevent mirror-like appearances that could cause dangerous glare. Tinting materials on the front side, back side, and rear windows of passenger vehicles must not create a mirrored, metallic, or glittery effect.
These windows can have some reflection, but it must not exceed 35%. Tint film manufacturers provide product specifications, including VLT and reflectivity percentages, to help consumers choose compliant materials.
Enforcement and Penalties
Law enforcement officers can stop vehicles for suspected window tint violations and use a tint meter to measure VLT. If a tint is too dark, too reflective, or improperly applied to the windshield, a citation may be issued.
A window tint violation is a Class C misdemeanor, which can result in a fine up to $50, plus court costs, as per Tennessee Code Annotated section 40-35-111.2Justia Law. Tennessee Code § 40-35-111 (2024) – Authorized Terms of Imprisonment and Fines for Felonies and Misdemeanors The primary penalty is financial, and jail time is rare for a first offense.
Illegal tint is a non-moving traffic violation and does not add points to a driving record. Ignoring a citation can lead to further legal issues, like driver’s license suspension. Drivers may also need to remove the non-compliant tint and show proof of correction. Repeated violations can result in more significant penalties.
Exceptions or Exemptions
Tennessee’s window tinting laws have exceptions for medical needs and certain vehicle types.
Individuals with a documented medical condition needing reduced light exposure may be allowed darker tints. This requires written certification from a licensed physician or optometrist. Approved documentation or an issued decal from the Tennessee Department of Safety and Homeland Security must be kept in the vehicle.3State of Tennessee. How Do I Obtain a Window Tint Exemption?
Exemptions also apply to certain vehicles:
- Multipurpose passenger vehicles (like vans and SUVs), which may have darker tint behind the driver if installed by the manufacturer or new car dealer in compliance with federal regulations.
- Vehicles used by law enforcement or for other specific governmental duties.
- Truck tractors, for the rear windows or side windows on the passenger side.
- Limousines, ambulances, and hearses.
Window tinting material installed by the vehicle manufacturer is not subject to state restrictions if it complies with applicable federal law.