Per the NC Department of Transportation:

“Tinted windows cannot measure darker than 32 percent with a North Carolina-approved window tint meter.

The tint on a windshield cannot extend more than 5 inches below the top of the windshield or below the AS1 line of the windshield, whichever is longer.”

Medical Exceptions:

“Individuals with a photosensitivity to light who need darker window tints can apply for a medical exception permit with the N.C. Division of Motor Vehicles’ Medical Review Program.

Permits are valid for up to five years.

An individual may have no more than two medical permits at the same time.

Permits are not interchangeable and must be carried in the vehicle to which it applies.

A medical exception sticker must be displayed in the lower left‐hand corner of the rear window. Failure to properly display the sticker is punishable by a $200 fine.”

Requirements do not apply to other windows on:

“Excursion passenger vehicles, as defined in G.S. 20‐4.01 (27)a

Motor homes, as defined in G.S. 20‐4.01 (27)d2

Ambulances, as defined in G.S. 20‐4.01 (27)f

Property‐hauling vehicles (rear window only), as defined in G.S. 20‐4.01 (31)

Limousines

Law enforcement vehicles

Multipurpose vehicles (e.g., mini-van, pickup truck, SUV) designed to carry 10 or less passengers – where the window is behind the driver and is built on a truck chassis or has special features designed for occasional off‐road operation

Vehicles with a medical exception issued by NCDMV”