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In Wyoming, film on an enclosed vehicle's front side, rear side and rearmost windows must be nonreflective and pass at least 28% light transmission through film and glass; no tolerance is stated. Windows behind the driver of trucks, buses, motor homes, ambulances, limousines and multipurpose passenger vehicles are exempt. Windshield film may run only along the top, not below the AS-1 line or 5 inches from the top, whichever is closer to the top.
Source: Wyo. Stat. § 31-5-962; Wyo. Stat. 31-5-102 (chapter 5 definitions: truck, "this act"); Wyo. Stat. 31-1-101(a)(xv)(M) (multipurpose vehicle); Wyo. Stat. 31-5-1201 (misdemeanor penalties). Summary last checked against these sources on September 28, 2026.
| Window | Rule |
|---|---|
| Windshield | A sunscreening device may be used only along the top of the windshield. It may not extend below the AS-1 line or more than 5 inches from the top, whichever is closer to the top. It must be nonreflective and not red, yellow or amber ((c)). The statute states no percentage for the windshield outside the medical certificate in (m). The section does not apply to windshields on motorcycles or motor-driven cycles ((h)). |
| Front side windows | Film on the side wings or side windows immediately to the right and left of the driver must be nonreflective. Total light transmission through the film and the glazing together must be not less than 28% ((d)). The statute states no tolerance. |
| Rear side windows | Film on the side windows behind the driver must be nonreflective, with total light transmission through film and glazing of not less than 28% ((e)). This does not apply to windows behind the driver of trucks, buses, motor homes, ambulances, limousines and multipurpose passenger vehicles ((h)). |
| Rear window | The rearmost window has the same rule: nonreflective, at least 28% through film and glazing ((e)), with the same vehicle-class exemption ((h)). If film is added to any window behind the operator, the vehicle must have one left and one right outside rearview mirror ((g)). |
| Reflectance and color | Film on the windshield, the front side windows, the side windows behind the driver and the rearmost window must be nonreflective ((c)-(e)). The statute defines that as a product or material designed to absorb light rather than to reflect it ((a)(v)). No sunscreening device or tinting film with a luminous reflectance above 20% may be applied or affixed to any window of a motor vehicle ((f)). These requirements do not apply to windows behind the driver of the vehicle classes listed in (h). The red, yellow or amber ban is stated for the windshield ((c)). |
| Installers | No person or firm may apply or affix to the windows of any motor vehicle in Wyoming a sunscreen device or tinting film that does not comply with the section ((k)). The section defines a dealer as a person or business that distributes or installs sunscreening products ((a)(i)). No installer label, sticker or certificate requirement appears in the text read. |
| Film applied before July 1, 1996 | Film applied before July 1, 1996 on the front side windows and side wings, the side windows behind the driver and the rearmost window must be nonreflective, with total light transmission through film and glazing of not less than 13% ((j)). |
VLT (visible light transmission) is the percentage of visible light that passes through a window or film; a higher number means lighter tint. Most state limits are measured on the finished window (glass and film together). Where a rule is stated for the film itself, the table says so. Some states also limit reflectance, the share of light bounced back off the surface (a mirror-like look).
Wyo. Stat. 31-5-962 covers enclosed motor vehicles registered or required to be registered in Wyoming and operated on a public highway, road or street ((b)). Its requirements do not apply to windows behind the driver of trucks, buses, motor homes, ambulances, limousines and multipurpose passenger vehicles, or to windshields on motorcycles or motor-driven cycles ((h)). A multipurpose passenger vehicle is a motor vehicle designed to carry 10 or fewer persons and built either on a truck chassis or with special features for occasional off-road operation ((a)(iv)). In chapter 5, a truck is a motor vehicle designed, used or maintained primarily for the transportation of property (31-5-102(a)(lv)). The section does not name SUVs, so whether an SUV's windows behind the driver are exempt depends on whether it fits one of the listed classes, such as the multipurpose passenger vehicle definition. Subsection (n) applies the section to multipurpose vehicles as defined in W.S. 31-1-101(a)(xv)(M) when they have a windshield and an enclosed cab. That is a separate class: at least four wheels, an unladen weight of 300 to under 3,000 pounds, a permanent upright driver's seat or saddle mounted at least 24 inches from the ground, and an identifying number. It includes off-road recreational vehicles.
Subsection (m) covers a motor vehicle operated by or regularly used to transport a person with a medical condition that makes the person susceptible to harm or injury from sunlight or bright artificial light. The vehicle may have film on its windshield and any or all of its windows that reduces light transmission to not less than 25%. On the windshield, the film may not reduce total light transmittance below 70%, except in the upper 5 inches or above the AS-1 line, whichever is closer to the top. The vehicle may not be operated on a highway unless the driver or an occupant possesses a certificate issued by the director authorizing that operation. The director issues it only on a signed statement from a licensed physician or licensed optometrist that identifies the person and says the film is necessary to safeguard that person's health. A certificate is valid while the condition persists or until the vehicle is sold, whichever comes first. In the director's discretion, one or more certificates may be issued to an individual or a family.
Section 31-5-962 states no penalty of its own. Violating any provision of W.S. 31-5-101 through 31-5-1701, which includes 31-5-962, is a misdemeanor (31-5-1201(a); 31-5-102(a)(lxxii)). Where no other penalty is provided, a first conviction carries a fine of up to $200. A second conviction of the same offense within one year carries up to $300. A third or later conviction within one year of the first carries up to $500, up to six months' imprisonment, or both (31-5-1201(b)). A $5 police officer continuing education and training fee is added (31-5-1201(h)).
For an enclosed motor vehicle registered or required to be registered in Wyoming, film on the side wings and the side windows immediately right and left of the driver must be nonreflective. Total light transmission through the film and the glazing together must be at least 28% (Wyo. Stat. 31-5-962(d)). The same rule applies to the side windows behind the driver and the rearmost window ((e)), except on trucks, buses, motor homes, ambulances, limousines and multipurpose passenger vehicles, whose windows behind the driver are exempt ((h)). The statute states no tolerance.
Only if it falls in a class that subsection (h) exempts. The section does not apply to windows behind the driver of trucks, buses, motor homes, ambulances, limousines and multipurpose passenger vehicles ((h)). A multipurpose passenger vehicle is designed to carry 10 or fewer persons and built on a truck chassis or with special features for occasional off-road operation ((a)(iv)). SUVs are not named. Subsection (g) requires left and right outside rearview mirrors when film is added to any window behind the operator. The text does not say whether (h) lifts that requirement for the exempt classes.
Not on the windows the section regulates. Film on the windshield, front side windows, side windows behind the driver and rearmost window must be nonreflective (Wyo. Stat. 31-5-962(c)-(e)), meaning designed to absorb light rather than reflect it ((a)(v)). No film with a luminous reflectance above 20% may be applied or affixed to any window ((f)). These requirements do not apply to windows behind the driver of the vehicle classes listed in (h).
Only a strip along the top. It may not extend below the AS-1 line or more than 5 inches from the top of the windshield, whichever is closer to the top, and it must be nonreflective and not red, yellow or amber (Wyo. Stat. 31-5-962(c)). Under a medical certificate, windshield film may not bring total light transmittance below 70% except in the upper 5 inches or above the AS-1 line, whichever is closer to the top ((m)).
Yes. Subsection (m) allows film down to 25% on the windshield and any windows of a vehicle operated by or regularly used to transport a person whose medical condition makes them susceptible to harm from sunlight or bright artificial light. The windshield may not go below 70% except in the upper 5 inches or above the AS-1 line, whichever is closer to the top. The driver or an occupant must possess a certificate issued by the director, which requires a signed statement from a licensed physician or licensed optometrist.
Violating 31-5-962 is a misdemeanor (31-5-1201(a)). Where no other penalty is provided, the fine is up to $200 for a first conviction and up to $300 for a second conviction of the same offense within one year. A third or later conviction within one year of the first carries up to $500, up to six months' imprisonment, or both (31-5-1201(b)). A $5 training fee is added (31-5-1201(h)).
Yes. Film applied before July 1, 1996 on the front side windows, the side windows behind the driver and the rearmost window must be nonreflective, with total light transmission through film and glazing of not less than 13% (Wyo. Stat. 31-5-962(j)).
Running a tint shop in Wyoming? See shop software for Wyoming.
This page summarizes Wyoming statute and regulation text for general information and is not legal advice. It covers passenger vehicles with aftermarket film (film added after the vehicle left the factory) and includes SUV, van and truck rules where the state sets different ones. Some vehicle types, such as limousines, buses, commercial and law-enforcement vehicles, and factory glass are treated differently in some states, and whether a vehicle registered in another state is covered depends on the state; see “Who this covers” above. Federal glazing rules (FMVSS 205, 49 CFR 571.205) apply separately from state law, and 49 U.S.C. 30122 bars manufacturers, distributors, dealers, rental companies and motor vehicle repair businesses from knowingly making inoperative any part of a device or element of design installed to comply with a federal motor vehicle safety standard, so installers should check both. Laws change and enforcement varies; confirm current requirements with the state before tinting. Before tinting, ask the installer to measure your glass and confirm the finished window will meet the limit; afterward, ask for a reading on a light-transmission meter and keep it.