No, 40% window tint is generally not legal for the front side windows or back side windows of a vehicle in California.
Understanding Window Tint and VLT
Window tint legality is primarily determined by its Visible Light Transmission (VLT) percentage. This measurement indicates how much light is permitted to pass through the tinted glass. For instance, a 40% tint means that only 40% of the outside light can penetrate the window, effectively blocking 60% of it. A higher VLT percentage signifies a lighter tint, allowing more light to pass through.
California's Window Tint Laws
California enforces specific regulations concerning the VLT percentage allowed on different windows of a vehicle. These laws are designed to ensure clear visibility for drivers and passengers, as well as for law enforcement personnel.
Here is a summary of the window tint requirements in California:
| Window Type | California VLT Requirement (Minimum) |
|---|---|
| Windshield | Only non-reflective tint is allowed on the top 4 inches of the windshield. The remainder must be clear. |
| Front Side Windows | Must allow a minimum of 70% of light to pass through. |
| Back Side Windows | Must allow a minimum of 70% of light to pass through. |
Why 40% Tint is Not Legal in California
Based on California's regulations, a 40% VLT tint falls below the minimum 70% VLT required for both front and back side windows.
- For front side windows, a 40% tint allows only 40% of light to pass through, which is significantly less than the required 70%.
- Similarly, for back side windows, a 40% tint also fails to meet the 70% light transmission minimum.
Therefore, applying 40% tint to these windows on a vehicle registered in California would constitute a violation of the state's vehicle code. The only part of the vehicle where a darker tint might be permissible is on the very top portion of the windshield.
Potential Exceptions: Medical Exemptions
In specific situations, individuals with certain medical conditions that cause extreme sensitivity to light may qualify for a medical exemption. This exemption can permit the use of darker window tint than what is typically allowed by law. To pursue a medical exemption, individuals usually need to:
- Obtain a certification or prescription from a licensed medical professional detailing the necessity of the darker tint for their condition.
- Apply for and receive an official medical exemption certificate from the relevant California state authority.
- Ensure this certificate is always carried within the vehicle and can be presented to law enforcement upon request.
It is important to note that even with a medical exemption, there may still be restrictions on the maximum darkness of the tint, and it typically applies only to specific windows. Always confirm the precise terms of any exemption with the California Department of Motor Vehicles (DMV).
Consequences of Non-Compliance
Driving with illegal window tint in California can lead to various penalties, including:
- Issuance of traffic citations and fines.
- Being ordered to remove the non-compliant tint.
- Possible vehicle impoundment in cases of repeat offenses or severe violations.
For the most accurate and current information regarding California's window tint laws, always refer to the official California Vehicle Code or the California Department of Motor Vehicles (DMV) website.
[[Window Tint Laws]]
