North Dakota Window Tint Laws: 35% Light Rule

North Dakota window tinting legal limits and 35 percent light transmission is one of the most common questions for drivers customizing their vehicles or prepping for state inspection. Get the numbers wrong, and you could face a $20 to $50 ticket, a failed inspection, or reduced visibility that puts you at risk. We've reviewed the current state statutes and enforcement guidelines to give you clear, actionable answers, no guesswork required.

Per the North Dakota Century Code § 39-21-41.1 as of 2026, front side windows must allow a minimum of 35% visible light transmission, or VLT, to be considered road-legal. Many aftermarket tint brands market products as "ND legal" that actually fall below the required threshold.

North Dakota Window Tint Laws: 35% Light Rule

Mirrored, reflective, or colored tints in red, amber, or yellow are banned across all windows. Fines for non-compliant tint range from $20 to $50 per window, plus a mandatory fix-it order.

Is 35% Tint Legal in North Dakota?

Yes, 35% VLT is the minimum legal darkness allowed for front side windows in North Dakota. That means any front side tint darker than 35% (a lower VLT number) is illegal for on-road use.

You can absolutely choose a lighter tint, such as 50% or 70% VLT, if you prefer more visibility over privacy. 35% is one of the most popular tint choices for ND drivers because it cuts glare and adds subtle privacy without making it hard to see through the window at night.

Out-of-state drivers visiting North Dakota are required to follow the state's tint rules while operating their vehicle on public roads. Many drivers assume 35% is the only legal option for front windows, but that's a widespread misconception. The law sets a minimum light transmission level, not a required tint darkness.

North Dakota’s Window Tint Laws at a Glance

North Dakota's window tint regulations cover every glass surface on your vehicle, not just the front side windows. The rules vary slightly by window location, and violating any of them can result in a $20 to $50 fix-it ticket, a failed state inspection, or even a traffic stop.

All restrictions on tint color and reflectivity apply to every window on the vehicle, not just the front side panels. The 6-inch windshield strip rule is often overlooked by DIY installers, who may accidentally apply tint that extends too far down the glass.

If you're unsure whether your existing tint meets these limits, you can request a VLT check at most professional tint shops for a small fee. These tint limits were last updated in 2019, and as of 2026, there are no pending legislative changes to the 35% front side window requirement.

What 35% Light Transmission (VLT) Actually Means

Visible Light Transmission, or VLT, is the standard measurement used for all automotive window tint. It measures the percentage of visible light that passes through a window, so a 35% VLT tint lets 35% of light through and blocks 65%.

Law enforcement and state inspection stations use a handheld VLT meter to measure this value, not a visual guess. A tint rated for 35% VLT will block roughly two-thirds of incoming light, cutting glare and UV exposure without making it hard to see through the window in daylight.

Factory-tinted glass on most new vehicles already falls in the 15-30% VLT range for rear windows, so adding 35% tint to the front sides keeps your overall visibility balanced. Different tint technologies, including ceramic, dyed, and metallized films, can all have the same 35% VLT rating, but they differ in heat rejection, UV protection, and durability.

Many drivers confuse VLT with darkness ratings like "20% limo tint," so it's worth double-checking the official VLT percentage on any tint product before you buy. Tint brands often list VLT on product packaging, but it's always a good idea to confirm the rating with the manufacturer or a professional installer if you're unsure.

Where 35% Tint Is Allowed on Your Vehicle

The 35% VLT minimum only applies to front side windows on passenger vehicles in North Dakota. You can apply 35% tint to your rear side windows or rear window if you want a uniform, consistent look across your vehicle, as there is no legal VLT limit for those panels.

Full 35% tint on the windshield is not allowed, even if it meets the VLT requirement, as it blocks too much light for safe driving.

The only catch is that any 35% tint you apply to rear windows still can't be reflective, mirrored, or colored in red, amber, or yellow shades. Many drivers choose to match their rear window tint to their front 35% tint for a cohesive aesthetic, and that's fully compliant as long as you follow the color and reflectivity rules.

Tint Rules for Other Windows (Rear, Windshield, etc.)

The rules for windows outside the front side panels are more flexible, but they still have clear restrictions you can't ignore. Windshields are the most restricted panel: you may only apply a non-reflective tint strip along the top edge, and it can be no taller than 6 inches.

Tint that extends below that 6-inch mark on the windshield is illegal, even if it meets VLT requirements, and it can also obstruct your view of traffic signals and road signs.

Rear side windows and the rear window have no minimum VLT requirement, meaning you can use 20% limo tint, 15% tint, or even opaque factory privacy glass if you prefer. The only rules that apply to these panels are the bans on reflective, mirrored, and colored tints in red, amber, or yellow.

Factory-installed privacy glass on most new SUVs and trucks already meets these requirements, so you don't need to add extra tint to those windows unless you want a darker look.

Prohibited Tint Types in North Dakota

A 35% VLT rating does not override North Dakota's bans on specific tint types, no matter how light or dark the film is. Reflective, mirrored, and colored tints in red, amber, or yellow are illegal on every window of a passenger vehicle operating on public roads.

Many aftermarket films have a subtle metallic or mirrored sheen that only shows up at certain angles, and that counts as a reflective tint under state law. Some drivers mistakenly use commercial building window film on their vehicles, as it often has a reflective coating to block heat. That film is not compliant with North Dakota's automotive tint rules, even if its VLT rating meets the 35% minimum.

Factory-installed tint on new vehicles is almost never in one of these banned categories, so you don't have to worry about that if you bought your car from a dealership. Even with an approved medical exemption, you still cannot use these banned tint types on any window.

How Law Enforcement Checks Tint Darkness

North Dakota Highway Patrol officers use calibrated handheld VLT meters to measure window tint, not just visual estimates. The meter measures the actual percentage of visible light passing through the glass, accounting for both factory and aftermarket tint.

If a reading for any front side window falls below 35% VLT, you will receive a fix-it ticket. Officers will usually test each front side window separately, as uneven tint application can lead to one panel being darker than the other.

In rural areas with lower traffic volume, officers may rely more on visual checks first, but they will use a meter to confirm any suspected non-compliance. The state does not allow drivers to use a personal VLT reading as a defense in court, as only law enforcement-calibrated meters are accepted as evidence.

Medical Exemptions and Special Cases

Drivers with qualifying medical conditions can apply for an exemption to the 35% front side VLT limit. Eligible conditions include lupus, albinism, severe photophobia, and other diagnoses that make sun exposure physically harmful.

You will need a signed statement from a licensed North Dakota physician confirming the medical need, submitted to the Highway Patrol for approval. The exemption only applies to VLT limits, so you still cannot use reflective, mirrored, or banned colored tints on any window.

Out-of-state medical exemptions are not automatically valid in North Dakota, so you will need to reapply if you move to the state. Commercial vehicles, including work trucks and delivery vans, do not qualify for any tint exemptions beyond the standard limits, even if the driver has a qualifying medical condition.

Common Mistakes That Get You Pulled Over

The most common tint mistake is assuming factory-tinted glass does not count toward the 35% VLT requirement for front side windows. Most new vehicles have factory front side glass rated for 70% to 80% VLT, so adding 35% aftermarket tint is fully compliant.

If your vehicle has factory front tint that is already darker than 35% VLT, adding any aftermarket film will make it illegal, and you will need to remove the factory tint to comply.

Another frequent error is applying a windshield tint strip that exceeds the 6-inch maximum height allowed by state law. DIY installers often misjudge the height of the strip, leading to a ticket during a routine traffic stop or inspection.

Out-of-state drivers also regularly get ticketed for bringing their home state's darker tint to North Dakota, as many neighboring states allow 20% VLT front side tint. Tint that has degraded from 5 or more years of UV exposure can also drop below the 35% VLT limit without you noticing, so it's worth checking older film with a meter.

How to Measure Your Tint’s VLT Before Installing

The only reliable way to confirm your tint's VLT is with a calibrated handheld VLT meter, which costs between $20 and $50 for a basic consumer model. Professional tint shops will measure both existing tint and new film before applying it, and most offer a free compliance check as part of their installation service.

You can also rent a VLT meter from many auto parts stores if you only need to check your tint once. You should measure the VLT of new tint before installing it, not after, to avoid the cost and hassle of removing non-compliant film.

Reputable tint brands list exact VLT percentages on their product packaging, but cheaper off-brand films often have wider manufacturing tolerances that can result in a tint 3% to 5% darker than advertised. If you are installing tint yourself, it is a good idea to measure the installed film once it has cured fully to confirm it meets the 35% minimum.

What Happens If Your Tint Is Illegal?

You will receive a fix-it ticket if any front side window measures below 35% VLT during a traffic stop or inspection. The fine typically ranges from $20 to $50 per non-compliant window. You must correct the violation and provide proof of compliance to have the ticket dismissed.

Law enforcement may also issue a warning for first-time offenses, especially if your tint is only slightly below the legal limit. Repeated violations can lead to higher fines or mandatory court appearances. Non-compliant tint can also cause your vehicle to fail its annual safety inspection.

Best Legal Tint Options for North Dakota Drivers

Ceramic tint is a top choice because it meets the 35% VLT requirement while offering superior UV protection and heat rejection. Dyed tint is more affordable and provides good glare reduction, though it fades faster over time. Metallized tint offers excellent durability and heat rejection but may interfere with electronic signals.

For drivers prioritizing longevity, ceramic tint lasts up to 10 years without significant fading. If budget is a concern, dyed tint provides a cost-effective solution at about half the price of ceramic. Always verify the VLT rating with the manufacturer before purchasing.

FAQs About North Dakota Window Tint Laws

Final Checklist: Staying Legal with 35% Tint