GPS windshield mounting laws vary by state: about twenty states allow a GPS or phone mount on the windshield if you place it in a specific low-corner zone, roughly thirty states and the District of Columbia effectively prohibit it, and a handful leave the question to officer discretion. Even in states where a windshield mount is legal, separate hands-free laws often make it illegal to touch the device once you are driving.
Why Windshield Mounts Are Restricted at All
Nearly every state has a traffic law prohibiting objects on the windshield that block the driver’s view. These statutes predate GPS technology by decades and were originally aimed at signs, stickers, and tinted coatings. Because the language is broad, a suction-cup mount violates the rule by default in most states unless the legislature has added a specific exception for navigation devices.
That default is what produces the three-way split. Some states have updated their codes to carve out a legal spot for GPS units. Some have not, so the older blanket prohibition still controls. And in a few, the statute is vague enough that enforcement is a coin flip.
States That Allow Windshield Mounts With Placement Rules
About twenty states explicitly permit GPS and navigation devices on the windshield, and each one restricts where on the glass the mount can sit. The goal is to keep the central viewing area clear while giving drivers a legal spot near the edges.
California allows a device inside a 7-inch square in the lower passenger-side corner, or a 5-inch square in the lower driver-side corner, and the mount must sit outside the airbag deployment zone.1California Legislative Information. California Vehicle Code 26708 Arizona uses the same dimensions: a 7-inch square in the lower corner farthest from the driver and a 5-inch square in the lower corner nearest the driver.2Arizona Legislature. Arizona Revised Statutes 28-959.01 – Materials on Windows or Windshield; Exceptions; Requirements; Violation; Definitions Minnesota is looser in wording but similar in intent, requiring GPS and navigation systems to be mounted “near the bottommost portion of the windshield.”3Minnesota Office of the Revisor of Statutes. Minnesota Statutes 169.71 – Windshield
Other states that expressly allow windshield mounts, either unconditionally or under similar placement conditions, include Colorado, Georgia, Maine, Michigan, Missouri, New Hampshire, North Carolina, Ohio, Oregon, Rhode Island, South Carolina, Tennessee, Alaska, Hawaii, Maryland, Montana, Nevada, and Utah. Specific rules differ, so check your own state’s vehicle code before you stick anything to the glass.
States That Prohibit Windshield Mounts
Roughly thirty states and the District of Columbia either ban non-transparent materials on the windshield outright or have no exception for GPS devices, which produces the same practical result. The general obstruction statute is the final word, and no amount of careful placement makes a suction-cup mount legal.
New Jersey’s statute makes it illegal to drive with “any sign, poster, sticker or other non-transparent material” on the front windshield, side windows, or deflectors, and separately prohibits equipping or loading a vehicle in any way that interferes with the driver’s forward or side vision.4Justia. New Jersey Code 39:3-74 – Windshields Must Be Unobstructed and Equipped With Cleaners Texas prohibits driving when the vehicle is loaded or occupied in a way that obstructs the operator’s view to the front or sides, and the state has never added a GPS exception. New York’s equipment statute similarly requires an unobstructed windshield with no carve-out for navigation devices.5New York State Senate. New York Vehicle and Traffic Law 375 – Equipment
Other states in this category include Alabama, Arkansas, Connecticut, Delaware, Florida, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Massachusetts, Mississippi, Nebraska, New Mexico, North Dakota, Oklahoma, Pennsylvania, South Dakota, Vermont, Virginia, Washington, West Virginia, Wisconsin, and Wyoming. If you live in one of these, a dashboard or vent mount is the only way to stay within the law.
When the Statute Is Vague
A few states fall into a gray zone. Their obstruction statutes are broad enough to cover a windshield-mounted device but don’t specifically mention GPS units, and no court decision or attorney general opinion has settled the question. An officer might wave you through or might write you a ticket, and both outcomes are defensible under the same statute.
If your state’s law simply says the driver’s view “shall not be obstructed” without further detail, mount lower, mount smaller, and keep the device out of your direct line of sight. A small GPS tucked into the lower passenger-side corner is far less likely to draw attention than a tablet-sized phone centered at eye level. Careful placement still doesn’t guarantee legal protection when the statute is open-ended.
A Legal Mount Does Not Mean You Can Touch It
This is where drivers get tripped up. Having a legal windshield mount does not give you a free pass to tap, swipe, or scroll while driving. A growing number of states have hands-free laws that restrict how you interact with a phone or GPS behind the wheel, even when the device is properly mounted.
California’s hands-free law is among the strictest. Drivers cannot hold or operate a handheld wireless phone or electronic communications device while driving.6California Legislative Information. California Vehicle Code 23123.5 Under recent updates, even tapping a mounted phone’s screen to reroute navigation, change music, or check a notification counts as a violation. The only legal interaction is a voice command that requires no physical contact.
Several other states treat any manual interaction with a mounted device the same as holding a phone to your ear. The practical takeaway: program your destination before you start driving, and use voice commands for anything you change on the road. A perfectly legal mount does you no good if you pick up a distracted-driving citation the moment you touch the screen.
Fines, Points, and Correctable Tickets
The most common outcome for a windshield mounting violation is a traffic citation. Statutory fines typically fall between $50 and $150. New York’s equipment statute sets a maximum fine of $150 for a first offense, with the possibility of up to 30 days in jail for repeated violations.5New York State Senate. New York Vehicle and Traffic Law 375 – Equipment Mandatory court surcharges and administrative fees can push the total well above the base fine.
In some states with explicit mounting rules, including California, the violation is treated as a correctable offense. You receive a “fix-it” ticket ordering you to remove the mount. Bring proof of correction to court and the citation is typically dismissed after a small processing fee. That option generally isn’t available in states that treat the violation as a standard moving offense.
The bigger consequence for many drivers is the effect on the driving record. Windshield obstruction is often classified as a moving violation, which means points on your license. Enough points trigger insurance premium increases and, eventually, license suspension. A single ticket won’t ruin your record, but it adds up if you’re already carrying points from other infractions.
How an Illegal Mount Can Affect Accident Liability
If you cause or contribute to a crash while driving with an illegally mounted device, the violation can be used against you in a civil lawsuit under a legal theory called negligence per se. Traffic safety laws exist to prevent exactly the kind of harm that occurs in a car accident, so if you were violating one of those laws at the time of the crash, courts in most states will presume you were negligent without the other side having to prove you acted unreasonably.
In practice, an illegal windshield mount can shift fault in your direction even if the mount didn’t directly cause the collision. Opposing counsel will argue you voluntarily drove with an obstructed view and that some portion of the crash resulted from that choice. Under comparative negligence rules used by most states, your share of fault reduces what you can recover for your own injuries and increases what you owe the other driver. Insurance adjusters know this, and an obstruction citation on the police report gives them leverage to reduce your claim.
Alternatives to a Windshield Mount
If your state bans windshield mounts, or you’d rather keep the glass clear, several options keep your device visible without touching the windshield:
- Dashboard friction mounts. Weighted, non-slip pads (sometimes called beanbag mounts) sit on the dash and hold a phone or GPS on a short arm. No adhesive, no suction cups, easy to reposition.
- Air vent mounts. These clip onto the slats of a heating or AC vent, keep the device at a natural height, and are among the cheapest options.
- Cup holder mounts. An adjustable base fills the cup holder, with a flexible neck extending upward. Works well in vehicles with deep cup holders.
- Adhesive dashboard discs. A small plastic or rubber disc permanently adhered to the dash gives a suction-cup mount a smooth surface, redirecting it from the windshield.
No state prohibits devices mounted to the dashboard itself, so if you cross state lines regularly a dashboard mount removes the legal guesswork.
Keep the Mount Out of the Airbag Zone
Wherever you put a device, keep it away from the path of your vehicle’s airbags. The driver’s airbag deploys from the steering wheel, and the passenger airbag deploys from the dashboard.7IIHS. Airbags A phone or GPS mounted directly over either location can become a projectile in a collision. Aftermarket dashboard covers can also block or redirect a deploying airbag, which is why California’s windshield mounting statute specifically requires the device to sit outside the airbag deployment zone.1California Legislative Information. California Vehicle Code 26708 Even in states that don’t codify the requirement, the physics don’t change. Mount low, mount to the side, and never directly in front of an airbag cover.