Are windshield phone mounts legal? The answer depends on the state, the exact spot on the glass, and whether the mounted device blocks your view. A law that permits a navigation device in one corner does not give you permission to put any phone mount in the middle of the windshield. This guide explains how to read the rules and checks five states against their actual statutes.
Updated September 2026. This is general information, not legal advice. Check the current law for every state in which you drive. A mount’s location, device size, airbag clearance, and how you use the phone all matter.
Why a Simple 50-State Yes-or-No List Fails
Windshield rules often address different things: an object attached to the glass, an object that obstructs the driver’s view, an exception for a GPS unit, and restrictions on operating a phone while driving. Those are separate questions. Some laws name a permitted area; others ask whether the driver’s clear view is obstructed. Treating both as a blanket “legal” or “illegal” answer can point a driver in the wrong direction.
The size of the entire setup counts in practical use. A suction cup in an authorized corner can still place a long arm and large phone in the driver’s line of sight. Put the phone where it cannot hide a pedestrian, cyclist, intersection, traffic signal, or vehicle from your normal seated position. Check that the mount does not interfere with an airbag, windshield wiper sweep, controls, or your ability to steer.
Five State Examples From the Actual Rules
These examples show why the old allowed/restricted/prohibited table needed to go. They are examples, not a substitute for checking the current rule in your own state.
| State | What the cited rule says | Practical reading |
|---|---|---|
| California | A portable GPS used for door-to-door navigation may be mounted in a seven-inch square in the lower corner farthest from the driver or a five-inch square in the lower corner nearest the driver, outside the airbag deployment zone. The phone-use statute refers to those GPS placement rules. | A windshield phone mount needs to meet the specified placement conditions. The center of the windshield is not one of those areas. |
| Florida | The windshield statute prohibits many attached items but expressly excepts a GPS device or similar satellite receiver used for navigation or specified safety and routing functions. | Calling every windshield navigation mount “illegal in Florida” is wrong. Whether a particular phone setup fits the exception needs attention to the statutory wording and its use. |
| New Jersey | The windshield rule prohibits specified nontransparent material on the glass and vehicles equipped in a way that unduly interferes with forward or side vision. | Avoid a glass-mounted setup that interferes with the view. The statute is more nuanced than the old claim that every windshield phone mount is expressly banned. |
| Nevada | The statute bars nontransparent material on windows that obstructs the driver’s clear view and identifies a six-inch square exception in the lower corner farthest from the driver. | Do not assume either lower corner is automatically acceptable. Read the obstruction rule and the limited exception together. |
| Washington | The statute prohibits nontransparent material on the windshield that obstructs the driver’s clear view of the highway or an intersecting highway. | The cited rule turns on obstruction; it does not, by itself, support a claim that all windshield mounts are prohibited. |
Read the primary sources: California Vehicle Code §26708 and §23123.5; Florida Statutes §316.2952; New Jersey MVC driver manual (see N.J.S.A. 39:3-74); Nevada NRS 484D.435; and Washington RCW 46.37.410.
California: Placement and Phone Operation Are Separate Rules
California provides one of the clearest examples of a limited windshield exception. Vehicle Code §26708 specifies two lower-corner areas for a portable GPS used for door-to-door navigation. The lower corner farthest from the driver has a seven-inch-square area; the nearest lower corner has a five-inch-square area and must be outside an airbag deployment zone. These dimensions describe the permitted areas, not a general license to block the view with a large device.
Vehicle Code §23123.5 separately governs operating a wireless phone while driving. If the phone is mounted in the manner specified for GPS placement, or on the dashboard or center console without hindering the view, the statute permits a hand motion consisting of a single swipe or tap to activate or deactivate a feature. A lawful mounting position does not authorize extended screen interaction. Set your destination before you move and use voice guidance when possible.
Florida: The Navigation Exception Matters
The old version of this article put Florida in a list of states that prohibit windshield mounts entirely. Florida Statutes §316.2952(2)(d) expressly includes an exception for a GPS device or similar satellite receiver used for navigation, certain safety feedback, or routing. That makes the blanket prohibition misleading. The text does not say that any object called a “phone mount” automatically qualifies, so be careful about claiming a particular setup is covered just because a phone can run a maps app.
For drivers who move between Florida and other states, the easiest setup to evaluate is often one attached somewhere other than the glass. Even then, you must keep the road and controls visible. A dashboard or vent position is a practical choice, not a universal legal guarantee.
New Jersey: Focus on the View Through the Windshield
New Jersey’s N.J.S.A. 39:3-74 addresses nontransparent material on the windshield and equipment that unduly interferes with the driver’s vision to the front and sides. The old article said that New Jersey categorically prohibits windshield phone and GPS mounts and asserted that drivers had been cited for them. We should not publish those claims without a precise supporting authority or case. For a MountGuys reader in New Jersey, the useful advice is to avoid any setup on the glass that intrudes into the view and choose a position that leaves the road visible.
Where Else Can You Put a Phone or GPS?
If you would rather avoid the windshield, compare the way each alternative fits your specific dashboard and driving position:
- Vent mount: Keeps the glass clear and can bring the phone closer to eye level. Check that it does not block important controls or airflow, and that the vent slats can carry the phone’s weight.
- Dashboard mount: An adhesive base or weighted base can work when vent placement is poor. Position it low enough that the phone does not hide the road or instruments. Confirm that the surface and adhesive are suitable for the vehicle.
- Vehicle-specific mount: A base made for your dash or trim may keep the device stable without putting anything on the glass. Confirm the exact model and model year before ordering.
- Suction cup mount: Some attach to a suitable dash surface as well as glass. Check the product’s surface requirements and any local placement rule before using it.
No mount type is automatically legal in every position. A dashboard unit can still obstruct the driver’s view, a vent mount can interfere with controls, and a long mounting arm can put the phone where a smaller base would not. Sit in your usual driving position and check the view before you start the engine.
How to Check the Rule for Your State
- Search the state legislature’s current vehicle code for “windshield,” “obstruct,” “nontransparent material,” and “GPS.” Use the actual enacted statute rather than a retailer’s state-by-state chart.
- Read the exceptions as well as the main prohibition. Check whether an exception names GPS navigation, phone use, a defined corner of the glass, or a particular vehicle type.
- Look up the state’s separate distracted-driving rule. Permission to mount a phone and permission to touch it while driving are different matters.
- Check the rule in every state on a road trip. Reposition the mount before crossing a state line if necessary, and never adjust it while driving.
Frequently Asked Questions
Is a windshield phone mount illegal in most states?
That claim is too broad to make from the laws reviewed here. Some states have specified placement exceptions; others focus on whether an object obstructs the view. A trustworthy nationwide count would require a current review of all 50 states and the District of Columbia, including exceptions and relevant phone-use rules.
Can I put the mount in a lower corner and assume it is legal?
No. California specifies two lower-corner areas and conditions, while Nevada’s cited exception describes the lower corner farthest from the driver. Other states use different wording. A corner position can still be a poor fit if the device extends into your view or the airbag zone.
Does a GPS have the same legal treatment as a phone?
Not necessarily. Florida names a GPS device or similar satellite receiver in its windshield exception. California’s phone-use statute ties mounted phones to its GPS placement rule. Read both the windshield provision and the phone-use provision before treating the two devices as interchangeable.
Are vent and dashboard mounts legal everywhere?
Do not assume so without checking local law and the installed position. Keeping the windshield clear avoids one common issue, but any mount that blocks the driver’s vision or interferes with safe operation can still be a problem.
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