Idaho window tint laws require at least 35% VLT on front side windows. Side windows behind the driver must allow at least 20% VLT. Tinted windows cannot reflect more than 35% of light. Other sections cover windshield rules medical exemptions penalties and updates. These rules come from Idaho Code Section 49-944 and Idaho State Police.
Tint Terms Defined
VLT stands for visible light transmission on a window. It measures the light that passes through the glass. A 35% VLT window lets through 35% of light. Luminous reflectance measures light the tint bounces back outward. Idaho caps that reflectance at 35% on tinted windows.
A sunscreening device is the legal term for tint film. The AS 1 line is a mark near the windshield top. The glass maker places that AS 1 line. An infraction is a fine only offense with no jail. These terms drive the Idaho window tint laws below.
Idaho Window Tint Laws Explained
Idaho window tint rules appear in Idaho Code Section 49-944. The state applies the same limits to cars SUVs and trucks. Front side windows and front side vents must allow 35% VLT. The rear window also requires at least 35% VLT. Side windows behind the driver may go to 20% VLT.
Every tinted window must also meet the reflectance limit. Tint cannot reflect more than 35% of light. This stops mirror like tint on any side window. The 3% tolerance applies to both VLT and reflectance. That margin covers small differences between tint meters.
Windshield Tint Rules In Idaho
The windshield follows a separate rule under the statute. Non reflective tint may go only along the windshield top. That tint must stay above the AS 1 line. Some windshields show no AS 1 line at all. Then tint may cover only the top 6 inches.
Tint below that line breaks the windshield rule. The statute targets aftermarket film not factory glazing. A medical exemption can change the windshield limit. That exemption allows 70% VLT on the full windshield. The medical exemption section below explains the proof needed.
Who Idaho Tint Rules Cover
These tint limits cover passenger vehicles SUVs and trucks alike. Idaho sets no lighter standard for larger vehicles. The rules target tint film added after purchase. Factory tinted glass falls under a separate exception. Dark factory glass differs from added tint film.
The factory exception covers original glazing from the manufacturer. It also covers glazing offered by an authorized dealer. This glass was legal when the vehicle was sold new. Federal glazing standards govern that original equipment glass. Idaho law does not make that factory glass illegal.
Medical Exemption And Tint Myths
Idaho allows a medical exemption for darker tint. The exemption permits 70% VLT on the full windshield. It permits 20% VLT on all other windows. A licensed physician must provide written verification first. Drivers must carry that written verification inside the vehicle.
Idaho law does not restrict tint color. No color of film is banned under the statute. Some online guides claim a dual side mirror rule. Idaho Code Section 49-944 does not state that requirement. The reflectance cap and VLT limits remain the core rules.
How Idaho Enforces Tint Rules
Officers measure tint darkness with a tint meter. The meter reads the VLT percentage of the window. Idaho allows a plus or minus 3% reading margin. The statute also bars selling non compliant vehicles. It bars operating such a vehicle on public highways.
A tint stop can lead to an infraction ticket. The ticket can name the driver for the violation. The fine can also reach the tint installer. Repeated tint violations can raise the fine amount. No jail time applies to these tint infractions.
Penalties For Illegal Tint
An Idaho tint violation counts as an infraction. An infraction is a minor non criminal offense. A tint violation carries no jail time in Idaho. The Idaho State Police window tinting notice states a $67 fine. That notice says the installer can also be cited.
Idaho caps infraction penalties under Idaho Code Section 18-113A. That law sets a penalty of no more than $300. It also confirms no imprisonment for an infraction. Courts set the fixed fine plus court costs. Penalty amounts can change so official schedules confirm current figures.
Recent Updates To The Law
Idaho lawmakers amended the tint statute in 2023. The change came through Chapter 112 and Senate Bill 1022. The amendment took effect on July 1 2023. This version is the current Idaho window tint law. Older state notices may predate this 2023 update.
The 2023 update kept the core VLT limits intact. Front windows still require 35% VLT after the change. Rear side windows still allow 20% VLT. The statute history lists amendments in 1992 1993 and 2000. The 2023 amendment is the latest recorded change.
Common Misconceptions About Idaho Tint
Many readers think a higher VLT number means darker tint. The opposite is true for visible light transmission. A higher number lets more light through the glass. Some guides list the rear window at 20% VLT. Idaho places the rear window in the 35% VLT group.
Another myth treats a tint ticket as a crime. Idaho classes the violation as a civil infraction. Many sources also skip the 35% reflectance cap. That cap can make legal darkness tint still illegal. The plus or minus 3% margin also gets ignored often.
Idaho window tint laws set 35% VLT on front windows. They allow 20% VLT behind the driver. They cap reflectance at 35% on tinted windows. Other states set different limits in their own codes. Readers comparing states can review Illinois window tint laws next.
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.