Maine Windshield Mounting Laws (2026 Guide)

Maine takes a practical approach to windshield mounting restrictions. Rather than banning all devices from the windshield, the state applies a functional obstruction test. If a mounted device does not block the driver's clear view of the road, it is permitted. This framework is found primarily in 29-A MRSA Section 2082, which governs window obstructions, and 29-A MRSA Section 2121, which establishes the hands-free device rules for drivers.

Understanding how these two statutes work together is essential for anyone who uses a GPS, phone mount, or dashcam in their vehicle in Maine.

Maine Windshield Obstruction Law: 29-A MRSA 2082

Title 29-A, Section 2082 is the primary statute governing what can and cannot be placed on a vehicle's windshield in Maine. The law addresses several categories of potential obstructions.

Signs, Posters, and Opaque Materials

A person may not operate a vehicle with a sign, poster, opaque or semitransparent material or substance on the front windshield, side wing, or side or rear window that obstructs the operator's clear view of the way or an intersecting way.

The key phrase here is "that obstructs the operator's clear view." Maine does not automatically prohibit all materials on the windshield. Instead, the law targets materials that actually block the driver's line of sight.

Hanging and Mounted Objects

A person may not operate a motor vehicle with an object placed or hung in or on the vehicle, other than the required or provided equipment of the vehicle, in a manner that obstructs or interferes with the view of the operator through the windshield or prevents the operator from having a clear and full view of the road and conditions of traffic.

This subsection specifically exempts "required or provided equipment of the vehicle." Factory-installed rearview mirrors, toll transponders, and similar items fall under this exception.

Sticker Placement Rules

Maine limits the number and placement of windshield stickers:

• A motor vehicle may display no more than one sticker on its windshield for parking or entry identification
• Non-inspection stickers must be placed within 4 inches of the bottom edge of the windshield
• If an inspection sticker occupies the lower left corner, other stickers must be positioned to its right
• Emergency Management Agency vehicles and those performing emergency services may display identifying windshield stickers bearing agency names or emblems

Inspection stickers are placed in the lower left-hand corner of the windshield or in the center behind the rearview mirror, as specified in 29-A MRSA 1758.

Snow and Ice Obstruction

Under subsection 8 of Section 2082, a person may not operate a motor vehicle with snow or ice on the front windshield, side wing mirror, or side or rear window that obstructs the operator's clear view of the way or an intersecting way. A violation carries a mandatory fine of $175 that may not be suspended by the court.

Passenger and Load Obstructions

Drivers may not operate a vehicle when cargo or more than three front-seat passengers obstruct their visibility or impair vehicle control.

GPS, Phone Mounts, and Dashcam Rules

Maine does not have a specific statute that addresses GPS devices, phone mounts, or dashcams by name. These devices are governed by the general obstruction standard in 29-A MRSA 2082.

What This Means in Practice

A GPS unit, smartphone mount, or dashcam mounted on the windshield is legal in Maine as long as it does not obstruct the driver's clear view of the road and traffic conditions. Maine follows the legal principle that what is not expressly forbidden is permitted.

Here are the practical guidelines:

• GPS devices: Legal on the windshield if they do not block the driver's forward view. Dashboard mounting is the safest option.
• Phone mounts: Legal if mounted in a position that preserves the driver's full field of vision. Suction cup mounts on the lower portion of the windshield or dashboard mounts are common choices.
• Dashcams: Legal as long as placement does not obstruct the driver's clear view. Behind the rearview mirror is the most common and legally secure position.

Unlike states such as California or Minnesota, Maine does not specify a required mounting zone (such as a 5-inch or 7-inch square). The only test is whether the device causes an actual obstruction.

Best Practices for Mounting Devices

Device	Recommended Placement	Legal Standard
GPS unit	Dashboard or lower windshield	Must not obstruct clear view
Phone mount	Dashboard, vent, or lower windshield	Must not obstruct clear view
Dashcam	Behind rearview mirror or dashboard	Must not obstruct clear view
Toll transponder	Near rearview mirror	Treated as vehicle equipment
Radar detector	Dashboard	Must not obstruct clear view

Maine Hands-Free Driving Law: 29-A MRSA 2121

Maine's hands-free driving law took effect on September 19, 2019, after Governor Janet Mills signed LD 165 into law on June 29, 2019. The law is codified in 29-A MRSA Section 2121 and fundamentally changed how drivers may interact with mobile devices.

What Is Prohibited

The statute prohibits operating a motor vehicle on public ways while "using, manipulating, talking into or otherwise interacting with a handheld electronic device or mobile telephone." This prohibition applies even when the vehicle is temporarily stopped at a traffic light, stop sign, or in traffic.

Drivers may not:

• Hold a phone to their ear while driving
• Scroll through apps or messages
• Type or read text messages (also prohibited under 29-A MRSA 2119)
• Watch videos or browse the internet
• Manually enter a GPS address while the vehicle is in motion

The Single-Touch Rule for Mounted Devices

Maine's hands-free law includes a specific provision for mounted devices. A driver who is at least 18 years old and does not hold a learner's permit or intermediate license may use a hand to activate or deactivate a feature or function of a mobile telephone or handheld electronic device if:

1. The device is in hands-free mode
2. The device is mounted or affixed to the vehicle in a location that does not interfere with the operator's view of the road
3. The feature or function activated requires only a single swipe, tap, or push of the operator's finger

"Hands-free mode" is defined as the manner of use of a mobile telephone or handheld electronic device without use of either hand by employing an internal feature of, or an attachment to, the telephone or device.

This means you may tap once to accept a call through a Bluetooth connection, switch a song on a streaming app, or dismiss a notification, but you may not scroll, type, or perform multi-step interactions.

How This Connects to Windshield Mounting

The hands-free law and the windshield obstruction law work together. To legally use a phone while driving in Maine, the device must be:

• In hands-free mode
• Mounted in a way that does not obstruct the driver's view (per 29-A MRSA 2082)
• Operated with no more than a single touch

A phone mounted on the windshield in a position that blocks the driver's view would violate both Section 2082 (obstruction) and potentially Section 2121 (improper mounting location for hands-free use).

Exemptions

Maine's windshield and device laws include several exemptions:

Windshield Obstruction Exemptions (29-A MRSA 2082)

• Required or provided equipment of the vehicle (rearview mirrors, factory components)
• Inspection stickers placed per 29-A MRSA 1758
• One parking or entry identification sticker (within 4 inches of the bottom edge)
• Emergency Management Agency vehicle identification
• Law-required certificates and documents

Hands-Free Law Exemptions (29-A MRSA 2121)

• Emergency calls: A driver who is not on a learner's permit may contact law enforcement or emergency services during situations with an immediate threat to health or well-being
• Commercial drivers: Those employed as commercial or school bus drivers may use devices within the scope of their employment as permitted under Federal Motor Carrier Safety Administration regulations
• Vehicle operating equipment: Handheld controllers used to operate plows or other equipment attached to the vehicle are exempt as required vehicle equipment
• Parked vehicles: Drivers who have safely and completely pulled off the roadway may use handheld devices

Who Cannot Use Hands-Free Mode While Driving

• Learner's permit holders: 29-A MRSA 1304 bans all use of handheld electronic devices and mobile phones, including hands-free mode
• Drivers under 18 with intermediate licenses: 29-A MRSA 1311 prohibits all mobile device use while operating a vehicle

Penalties

Maine imposes different penalties depending on the type of violation.

Handheld Device Violations (29-A MRSA 2121)

Offense	Fine
First offense	$50
Second or subsequent offense	$250

Fines are deposited into the Supplemental Transportation Fund. These are traffic infractions, not criminal offenses.

Text Messaging Violations (29-A MRSA 2119)

Texting while driving carries significantly harsher penalties:

Offense	Fine	License Suspension
First offense	$250 minimum	None
Second offense (within 3 years)	$500 minimum	30 days
Third offense (within 3 years)	$500 minimum	60 days
Fourth or subsequent (within 3 years)	$500 minimum	90 days

The Secretary of State may suspend licenses for repeat texting violations without a hearing.

Windshield Obstruction Violations (29-A MRSA 2082)

General windshield obstruction violations are traffic infractions. The snow and ice obstruction provision carries a mandatory $175 fine that cannot be suspended.

Distracted Driving (29-A MRSA 2118)

If a windshield-mounted device or handheld device use contributes to a traffic infraction or reportable accident, the driver may also face a charge under 29-A MRSA 2118 for failure to maintain control of a motor vehicle while distracted. This charge is in addition to any device or obstruction citation.

Window Tinting Rules

While not directly about mounted devices, Maine's window tinting rules under 29-A MRSA 1916 affect overall windshield visibility and work alongside the obstruction standard.

• Front windshield: No aftermarket tinting is permitted below the AS-1 line (or the top 5 inches if no AS-1 line is marked)
• Side windows (front doors): Must allow at least 35% light transmittance
• Side windows (behind driver): May be tinted darker than 35%
• Rear window: May be tinted if the vehicle has dual side mirrors
• Reflective materials: Prohibited on all windows
• Medical exemptions: Available through the State Police Chief for qualifying conditions
• Violation penalty: Minimum $100 forfeiture

Vehicles with aftermarket tinting must carry a light transmittance certificate and present it during inspection.

Recent Legislative Activity

Maine's core windshield obstruction statute (29-A MRSA 2082) was last amended in 2013. The hands-free driving law (29-A MRSA 2121) has been in effect since September 2019 and has not been amended since its enactment.

During the 131st Legislature (2023-2024), LD 224 proposed increasing handheld device fines from $50/$250 to $500/$1,000 and adding license suspension for a third offense. The Transportation Committee voted unanimously against the bill, and it did not advance.

No changes to the windshield obstruction or hands-free device statutes were enacted during the 132nd Legislature (2025-2026) as of March 2026.

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