Pennsylvania window tint laws

For a sedan in Pennsylvania, front side windows must let at least 70% of light through, back side windows at least 70%, and the rear window at least 70%. Lower VLT means darker glass, so those percentages are floors, not targets, and the meter reads the film and the factory glass together. SUVs, vans and trucks are listed separately: front side 70%, back side no VLT limit, rear no VLT limit.

No, not on the front side windows. Pennsylvania requires at least 70% VLT there and 20% is darker than that, before you even account for the factory glass, which makes the reading darker still. The back side windows have a 70% floor, so 20% is too dark there too.

Pennsylvania's rule for the windshield: 70% light transmittance (Table X). Products or materials along the top edge of the windshield are permitted only if they are transparent, do not encroach upon the AS-1 portion of the windshield as provided by FMVSS No. 205, and are not more than 3 inches from the top of the windshield (§ 175.263(a)).

What the source says: Certificate of exemption issued by PennDOT (75 Pa.C.S. § 4524(e)(2)(ii), (3)(ii); 67 Pa. Code § 175.265(b)(2)). Granted only where the owner/registrant, or a household member who regularly drives or is driven in the vehicle, suffers from a physical condition the Department determines — in consultation with the Medical Advisory Board — justifies the exemption, certified by a licensed physician or optometrist. The application (PennDOT form) requires vehicle make, year, model and VIN. The exemption authorises only a COLOURLESS sun screening device or other material that filters ultraviolet light — not dark film. The certificate must be carried in the vehicle at all times, displayed on a police officer's request, and submitted to the inspection station at inspection; it becomes void on sale or transfer of the vehicle. A medically exempt vehicle may be equipped with only a left outside rearview mirror unless it was originally equipped with mirrors on both sides (§ 175.264). Confirm the current process with the agency named before you have film installed.

Pre-1998 passenger car rear windows: Table X requires a label permanently installed between the sun screening device or other material and the glazing to which it is applied, containing the name of the device or material manufacturer or a registration number and the statement 'Complies with VESC-20.' No other vehicle sticker or installer label is required.