Maryland window tint laws require aftermarket film to allow at least 35% VLT on regulated windows for most passenger vehicles. SUVs and vans follow the same rule on front side windows but allow any darkness behind the driver. Reflective and mirrored tint is banned outright regardless of VLT percentage. This guide covers windshield rules, banned colors, and exemptions. The rule comes from Maryland Transportation Code Section 22-406 official text.
Key Terms Defined
VLT stands for Visible Light Transmission and measures the percentage of outside light passing through a window after tint film is applied. A lower VLT number means a darker window because less light gets through. The AS-1 line is a factory mark near the windshield top showing where tint may legally begin. A Safety Equipment Repair Order requires a driver to correct a defect and get re-inspected.
COMAR and Its Role
COMAR is the Code of Maryland Regulations, the compiled set of administrative rules state agencies issue under statutory authority. Window tint darkness limits come from the Transportation Code directly. Separate rules on tint color and reflectance sit in COMAR rather than the statute. A reader who sees both a code section and a COMAR citation is seeing two layers of one regulatory system, not a conflict.
What the Law Says
Maryland law sets a minimum light transmittance requirement rather than a maximum darkness number written as a percentage cap. Aftermarket tinting material added to a regulated window must allow at least 35% VLT to pass through. This threshold applies to the combined effect of the factory glass and any film added afterward, not the film alone. Installing tint that fails this standard is also separately prohibited.
The 35% VLT Rule for Passenger Vehicles
For a vehicle registered as a standard passenger car, every window with aftermarket tint applied must meet the 35% VLT minimum. This includes the front side windows nearest the driver and front passenger. It also includes the rear side windows and the rear window itself. Passenger cars, sedans, coupes, convertibles, and station wagons all fall under this same uniform standard statewide.
The Windshield AS-1 Line Rule
Windshield tint faces its own separate restriction under the statute. Material may not be added to the windshield below the AS-1 line or below 5 inches from the top of the windshield, whichever point sits higher. This creates a narrow strip near the top where a visor style tint is allowed. The rest of the windshield below that strip must remain untinted under Maryland law.
Color and Reflectance Restrictions
Maryland law separately bans reflective and mirrored finishes on tint film regardless of how much light the film transmits. A film could technically meet the 35% VLT threshold and still be illegal if it creates a mirror like appearance. Restricted tint colors include red, yellow, and amber film. These restrictions function independently from the VLT darkness rule and apply across regulated windows.
Who It Applies To
Maryland Transportation Code Section 22-406 applies these tint rules based on how a vehicle is registered rather than its general appearance. Registration category determines which specific window transmittance rule a given vehicle must follow under the statute. Passenger vehicles follow one uniform rule across every window. Multipurpose vehicles follow a narrower rule covering only the windows closest to the driver.
Passenger Cars, Sedans, and Station Wagons
A vehicle registered as a standard passenger car faces the strictest version of the rule. Every window carrying aftermarket tint, from the front doors through the rear window, must independently meet the 35% VLT minimum. There is no exception in this category for rear windows regardless of how many mirrors the vehicle has. This uniform treatment makes passenger cars the most tightly regulated class.
SUVs, Vans, and Multipurpose Vehicles
Vehicles registered under the multipurpose, limousine, or certain truck registration sections face a narrower version of the rule. Only the windows to the immediate right and left of the driver must meet the 35% VLT minimum under this branch of the statute. Windows behind the driver are not subject to this same transmittance floor. This explains why SUVs and vans commonly carry darker rear tint than sedans.
Exceptions and Limitations
Maryland recognizes a medical exemption from the 35% VLT requirement for people who need protection from sunlight due to a health condition. The exemption requires written certification from a physician licensed to practice medicine in the state. That certification must detail the specific medical need for tint darker than the standard allows. It must be present in the vehicle whenever a police officer stops the driver.
The Medical Exemption and the 2025 Update
Maryland changed this exemption through Chapter 452 of the 2025 Laws of Maryland, effective October 1, 2025. Before this change, a written certification was valid for a period the physician determined, not to exceed 2 years, regardless of the condition involved. Under the amendment described in the 2025 Maryland House Bill 436 medical exemption amendment, a certification for a permanent condition is now valid indefinitely.
Manufacturer Film Certification
Window tint film sold for use in Maryland must be certified by its manufacturer under state regulatory requirements. This certification process is separate from the medical exemption and applies to the film product rather than any individual vehicle. A driver working with an installer who uses uncertified film risks a compliance problem even where the measured VLT happens to meet the 35% threshold.
Penalties or Consequences
A police officer who observes a vehicle operating with tint that fails the transmittance requirement may stop the driver under the statute. The officer may issue a citation charging the tint violation. Separately, the officer may issue a Safety Equipment Repair Order requiring the driver to correct the problem. Fine amounts for equipment violations are set by the district court’s official prepayable fine schedule and vary by charge and county.
Citations and Safety Equipment Repair Orders
A Safety Equipment Repair Order works alongside, not instead of, a traffic citation for illegal tint. The order identifies the specific defect and gives the driver a set window of time to correct it. Details on this process, including banned colors and the reflective prohibition, appear in the Maryland State Police guidance on window tint repair orders. Ignoring an order can lead to further enforcement.
The Inspection Re-Certification Process
Correcting a tint violation under a repair order is not simply a matter of removing the film at home. The vehicle must be taken to a Maryland licensed inspection station where a registered mechanic tests the corrected windows with an approved tint meter. The inspection station then certifies compliance before the repair order process closes. A police officer generally cannot certify this specific repair type.
Common Misconceptions
Several assumptions about Maryland tint law do not match how the statute and related regulations actually work. These misconceptions often come from confusing a federal manufacturing standard with a separate state aftermarket rule. Others come from assuming Maryland handles vehicle inspections the same way as neighboring states. Clearing up these points helps a reader understand which rule actually governs their situation.
Confusing Federal Glass Standards with State Tint Law
Federal Motor Vehicle Safety Standard 205 sets a 70% VLT minimum for new vehicle glass as manufactured, confirmed in an official NHTSA interpretation letter to the Maryland Motor Vehicle Administration. This federal rule governs glass installed at the factory. It does not regulate aftermarket tint added later. Maryland’s separate 35% VLT rule under Section 22-406 governs that later addition, covering a different point in a vehicle’s life.
Assuming Annual Inspections Are Required
Maryland does not run a periodic annual or biennial safety inspection program the way some neighboring states do. A vehicle typically only faces a Maryland safety inspection when first titled in the state or transferred between owners. This one-time inspection can include a tint check as part of a broader safety review. Details on when it applies appear in the Maryland MVA safety inspection requirements.
Fine amounts for a tint citation are not fixed to one universal number and depend on the specific charge filed by the officer. The Maryland District Court schedule of pre-set traffic fines sets out the official prepayment process courts use statewide for equipment violations. A driver who receives a citation or a repair order can review the Disclaimer below for how this general information applies to an individual situation.
Disclaimer
This article is for general informational purposes only. It is not legal advice. Lawwalls publishes informational content only and does not provide legal services or legal advice.
For legal advice about your specific situation contact a licensed attorney in your state. Laws change and vary by jurisdiction. Verify current rules with official government sources or a qualified lawyer.