What are the laws about tinted windows?

In Pennsylvania, the law governing tinted windows is found in the Pennsylvania Vehicle Code, Title 75, Section 4524. This law states that, with certain exceptions, the tint of the windows in vehicles may not be darker than a certain level. The darkness of the tint is measured by a Visible Light Transmission (VLT) percentage. The VLT percentage reflects how much visible light the tint allows into the vehicle; a lower VLT percentage means that less visible light is allowed in, creating a darker tint. In Pennsylvania, the maximum allowable VLT percentage for front side windows is 70%, meaning that only 70% of incoming light is allowed through the tint. The maximum allowable VLT percentage for back side windows and rear window is 50%, meaning that only 50% of incoming light is allowed through the tint. Any darker tint is illegal. Additionally, any tinted treatments that are metallic, mirrored, reflective, or opaque are not permitted on any windows. Exceptions to these rules include medical exemptions and law enforcement vehicles. Medical practitioners may apply for a medical exemption, allowing their patients to tint their windows to a darker VLT percentage than the legal limit. Law enforcement vehicles are allowed to have a VLT percentage of down to 20%, which is significantly darker than the legal limit.

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What are the laws about tinted windows?

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