Pennsylvania Windshield Mounting Laws (2026 Guide)

Pennsylvania prohibits GPS units, phone holders, and suction cup mounts on the front windshield under 75 Pa.C.S. 4524, which allows only inspection certificates and officially required stickers. Dashcams have no explicit windshield exemption for private vehicles. Use a dashboard or vent-clip mount to stay legal.

Pennsylvania has one of the strictest windshield obstruction laws in the country. Under 75 Pa.C.S. 4524, the state uses a whitelist approach: only inspection certificates, mass transit identification stickers, and other officially required stickers may be placed on the front windshield. Everything else that could obstruct the driver's view is prohibited.

This means GPS units, phone mounts, and suction cup holders attached to the windshield fall outside the narrow list of approved items. Combined with Paul Miller's Law, Pennsylvania's new hands-free driving statute that took effect on June 5, 2025, drivers face a legal landscape that demands careful attention to how and where they mount electronic devices in their vehicles.

The Core Statute: 75 Pa.C.S. 4524

Pennsylvania's windshield obstruction law is found in Title 75, Section 4524 of the Pennsylvania Consolidated Statutes. The statute covers six subsections that address different types of obstructions and exemptions.

Subsection (a): Front Windshield Obstructions

The law states that no person shall drive any motor vehicle with any sign, poster, or other nontransparent material upon the front windshield that materially obstructs, obscures, or impairs the driver's clear view of the highway or any intersecting highway.

The only exceptions are:

• Inspection certificates (Pennsylvania's annual safety inspection sticker)
• Sticker identification signs on mass transit vehicles
• Other officially required stickers mandated by law

Ice and snow on the front windshield that materially obstruct the driver's view are also prohibited. Pennsylvania takes this seriously, and drivers are expected to fully clear the windshield before driving.

Subsection (b): Side and Rear Window Obstructions

No person shall drive with any sign, poster, or other nontransparent material, including ice or snow, on the side wings, side windows, or rear windows that materially obstruct the driver's view. One notable exception: the placement of a registration permit on the side or rear window is not considered a material obstruction.

Subsection (c): Rearview Mirror and Other Obstructions

The statute prohibits any object or material hung from the inside rearview mirror or otherwise placed in a position that materially obstructs the driver's vision through the front windshield. This includes air fresheners, parking passes, and other items commonly hung from the mirror. The provision also covers anything attached in a manner that constitutes a safety hazard.

Subsection (d): Windshield Wiper Requirements

Every motor vehicle (except motorcycles and special mobile equipment) must have a functioning wiper system capable of clearing rain, snow, or moisture from the windshield, controllable by the driver.

Subsection (e): Sun Screening and Tint Restrictions

Pennsylvania prohibits any sun screening device or material that prevents a person from seeing into the vehicle through the windshield, side wings, or side windows.

Read that subsection carefully, because it contains no percentage at all. The statutory test in 4524(e)(1) is purely visual: whether a person can see or view the inside of the vehicle. The familiar 70 percent figure lives in PennDOT's regulations, not in the Vehicle Code. 67 Pa. Code 175.2 defines "material which does not permit a person to see or view the inside of the vehicle" as material that reduces light transmittance below 70 percent, or below the percentage FMVSS No. 205 allowed when the vehicle was built, and 67 Pa. Code 175.67 prohibits such material on an inspected vehicle.

Minimum light transmittance, from Table X in 67 Pa. Code Subchapter O as summarized in PennDOT's Vehicle Window Tint fact sheet:

Two notes on that table. PennDOT defines a multipurpose passenger vehicle as one built on a truck chassis or specifically designed for occasional off-road use, which is what puts most SUVs, vans, and pickups in the relaxed row. And tint applied to the rear window of a pre-1998 passenger car must carry a permanently installed label reading "Complies with VESC-20" along with the manufacturer name or registration number.

Exemptions from tint restrictions include:

• Factory-installed tinted windows from the manufacturer
• Hearses, ambulances, and government vehicles
• Vehicles with a currently valid PennDOT certificate of exemption for medical reasons

Subsection (f): Police Vehicle Exception

Section 4524 does not apply to mobile video recording equipment installed in a vehicle used exclusively for official police purposes.

Why GPS and Phone Windshield Mounts Are Problematic in Pennsylvania

Unlike states such as California or Alabama that explicitly allow devices mounted on the windshield in designated areas, Pennsylvania's statute takes the opposite approach. The whitelist in subsection (a) names only inspection certificates and officially required stickers as permissible windshield items.

A GPS device, phone mount, or suction cup holder is not an inspection certificate. It is not an officially required sticker. Under a strict reading of the law, any nontransparent material on the windshield that obstructs the driver's view is a violation, and these devices clearly qualify as nontransparent material.

The key legal phrase is "materially obstructs, obscures or impairs the driver's clear view." Some drivers argue that a small device does not materially obstruct their view. However, whether a particular mount crosses that line is a fact question, decided first by the officer at the roadside and then, if you contest the ticket, by a magisterial district judge. We have not identified a published Pennsylvania appellate decision squarely upholding a citation for a windshield-mounted GPS unit or phone mount, so treat the risk here as enforcement discretion rather than settled case law.

The safest legal option in Pennsylvania is to use a dashboard mount, vent-clip mount, or a mount attached to the center console. These placements keep the device accessible without placing anything on the windshield.

Paul Miller's Law: Pennsylvania's Hands-Free Driving Requirement

On June 5, 2024, Governor Josh Shapiro signed Senate Bill 37 into law. Known as Paul Miller's Law, the statute adds 75 Pa.C.S. 3316.1 to the Vehicle Code and became effective on June 5, 2025.

The law is named after Paul Miller Jr., who was killed in a crash with a tractor trailer in Monroe County in 2010 after a distracted driver reached for their phone.

What the Law Prohibits

Paul Miller's Law bans the use of handheld interactive mobile devices while driving. The statute defines "use an interactive mobile device" narrowly, as exactly three physical acts:

• Using at least one hand to hold, or supporting with another part of the body, an interactive mobile device
• Dialing or answering an interactive mobile device by pressing more than a single button
• Reaching for an interactive mobile device in a manner that requires the driver to maneuver out of a seated, properly restrained driving position

The definition turns on how you handle the device, not on what you are doing with it. Typing a message, scrolling social media, or taking a photo is caught only because you have to hold the phone to do it, and the holding is the violation.

Text-based communication has its own separate section. 75 Pa.C.S. 3316 prohibits using an interactive mobile device to send, read, or write a text message, instant message, email, or other written communication while the vehicle is in motion. Under 3316.1(h), an officer may not charge a driver under both sections for an offense committed at the same time and place.

These prohibitions apply even when the vehicle is temporarily stopped at a traffic light, stop sign, or in congestion.

Permitted Uses Under Paul Miller's Law

Drivers may still:

• Use a device to contact emergency services (911) to prevent injury or property damage
• Use GPS or navigation through a hands-free mount (the device must be set up before driving)
• Make phone calls through Bluetooth, speakerphone, or voice-activated systems using a single button press
• Use devices when the vehicle is safely parked off the roadway

How This Connects to Windshield Mounts

Paul Miller's Law creates a tension with the windshield obstruction statute. The hands-free law encourages drivers to mount devices for hands-free use, but the windshield obstruction law does not permit devices on the windshield. The practical solution is to use a dashboard or vent mount that complies with both statutes.

Enforcement Timeline

For the first year, officers issue only written warnings. Beginning June 6, 2026, violations carry a $50 fine as a summary offense, plus applicable court costs.

Impact on Commercial Drivers

The violation carries no points for non-commercial drivers and is not recorded on the personal driving record. For commercial drivers, the violation is recorded as a non-sanction violation, which could affect commercial driving qualifications and employer policies.

Electronic Toll Transponder Exemption

Pennsylvania drivers who use E-ZPass or other electronic toll collection devices receive a specific legal exemption. Under 74 Pa.C.S. 8117, an electronic toll collection device affixed to the front windshield in accordance with regulations is not considered a violation of 75 Pa.C.S. 4524. This means your E-ZPass transponder can legally remain on the windshield.

Dashcam Rules in Pennsylvania

Dashcams occupy a gray area under Pennsylvania law. The statute in subsection (f) exempts mobile video recording equipment only in vehicles used exclusively for official police purposes. Private dashcams do not fall under this exemption.

However, dashcams are widely used in Pennsylvania, and enforcement against them is uncommon when they are mounted in a way that does not obstruct the driver's view. The recommended placement is directly behind the rearview mirror, where the camera records the road without blocking any additional visibility beyond what the mirror already occupies.

Pennsylvania is also an all-party consent state for audio recording under 18 Pa.C.S. 5704. If your dashcam records audio inside the vehicle, all occupants must consent to the recording. Many drivers disable audio recording or post a visible notice in the vehicle to address this requirement.

Medical Exemptions for Window Tint

Pennsylvania allows a medical exemption for window tint that would otherwise violate subsection (e). To qualify:

1. The vehicle owner, registrant, or a household member who regularly drives or rides in the vehicle must have a qualifying medical condition.
2. A licensed physician or optometrist must certify the condition to PennDOT.
3. PennDOT, in consultation with its Medical Advisory Board, determines whether the condition justifies the exemption.
4. The tint must comply with applicable federal regulations.
5. The certificate of exemption must be carried in the vehicle and shown to police on request.

If the vehicle is sold or transferred to someone who does not qualify, the exemption becomes void. The seller must remove all sun screening material and destroy the exemption certificate before transferring the vehicle.

Penalties for Windshield Obstruction Violations

Violating 75 Pa.C.S. 4524 is classified as a summary offense. Under 75 Pa.C.S. 6502, the default fine for a summary offense under Title 75 where no specific penalty is stated is $25 plus court costs.

This violation does not carry points on your driver's license. However, a citation creates a record that could be relevant in insurance claims or civil liability situations, particularly if an accident occurs while the vehicle has an obstructed windshield.

What to Expect If You Are Cited

• The officer issues a summary citation (non-traffic citation in most cases)
• You may pay the fine or contest it before a magisterial district judge
• The fine itself is modest, but court costs and processing fees can add to the total
• No license points are assessed for equipment violations under Chapter 45

Ice and Snow Removal Requirements

Pennsylvania explicitly includes ice and snow in the windshield obstruction statute. Drivers must clear the front windshield of ice and snow before driving. Side and rear windows must also be cleared.

While the $25 fine for windshield obstruction applies, Pennsylvania also has a separate law addressing snow and ice on vehicles: 75 Pa.C.S. 3721, known as Christine's Law. It requires drivers to make reasonable efforts to clear accumulated ice or snow from the vehicle, including the hood, trunk, and roof, within 24 hours after snow or ice stops falling, or face a $50 fine per offense. If snow or ice dislodges or falls from a moving vehicle and strikes another vehicle or a pedestrian, causing death or serious bodily injury, the driver faces a fine of $200 to $1,500 per offense. Christine's Law took effect in 2022 (P.L.1585, No.90) and replaced the former 75 Pa.C.S. 3720, which is now repealed.

Comparison: Pennsylvania vs. Neighboring States

Pennsylvania's whitelist approach stands in contrast to several neighboring states:

Pennsylvania is among the most restrictive states for windshield-mounted devices in the country.

More Pennsylvania Laws

• Pennsylvania Recording Laws
• Pennsylvania Lemon Law
• Pennsylvania Hit and Run Laws
• Pennsylvania Car Seat Laws
• Pennsylvania Dog Bite Laws

Frequently Asked Questions

Can I mount my GPS or phone on the windshield in Pennsylvania?

Pennsylvania law (75 Pa.C.S. 4524) uses a whitelist approach that only allows inspection certificates, mass transit stickers, and officially required stickers on the front windshield. GPS units and phone mounts are not on this list and can result in a citation if they materially obstruct your view. The safest legal option is a dashboard mount, vent-clip mount, or center console mount.

What is Paul Miller's Law and how does it affect device use while driving?

Paul Miller's Law (75 Pa.C.S. 3316.1) took effect on June 5, 2025, and prohibits holding or supporting an interactive mobile device while driving in Pennsylvania. Drivers must use hands-free methods such as Bluetooth, voice commands, or a mounted device. For the first year through June 5, 2026, officers issue written warnings only. After that, violations carry a $50 fine plus court costs.

Are dashcams legal on a Pennsylvania windshield?

Dashcams are widely used in Pennsylvania, but the windshield obstruction law (75 Pa.C.S. 4524) only formally exempts police vehicle video equipment. Private dashcams are tolerated when mounted behind the rearview mirror in a position that does not obstruct the driver's view. Keep in mind that Pennsylvania is an all-party consent state for audio recording, so all vehicle occupants must consent if your dashcam records sound.

What is the penalty for a windshield obstruction violation in Pennsylvania?

A windshield obstruction violation under 75 Pa.C.S. 4524 is a summary offense. The default fine is $25 plus court costs under 75 Pa.C.S. 6502. No points are added to your license. However, having an obstruction on your windshield at the time of an accident could affect insurance claims or civil liability.

Is my E-ZPass transponder legal on the windshield in Pennsylvania?

Yes. Electronic toll collection devices like E-ZPass are specifically exempted. Under 74 Pa.C.S. 8117, a toll transponder affixed to the windshield in accordance with regulations does not constitute a violation of the windshield obstruction law (75 Pa.C.S. 4524).