District of Columbia Windshield Mounting Laws

The District of Columbia has some of the most restrictive windshield mounting and obstruction laws in the United States. Unlike many states that allow GPS or phone mounts in certain zones of the windshield, D.C. regulations prohibit attaching any object to the windshield entirely. Combined with a strict 70% visible light transmittance (VLT) requirement and a comprehensive hands-free driving law, D.C. drivers must be careful about what goes on, near, or inside their windshield.

This guide covers every regulation that affects windshield mounting in the District, including the obstruction law, tint requirements, hands-free rules, penalties, exemptions, and how these laws interact.

D.C. Windshield Obstruction Law (18 DCMR 2213)

The primary regulation governing what can and cannot be placed on a windshield in the District of Columbia is 18 DCMR Section 2213, titled "Obstruction of Driver's View or Driving Mechanism."

The General Rule

Under 18 DCMR 2213.1, no person shall drive a vehicle when the windshield or windows are obstructed in a way that significantly reduces the driver's view to the front or sides of the vehicle, or interferes with the driver's control of the vehicle.

The Blanket Ban on Attached Objects

The more specific and stricter provision is 18 DCMR 2213.7, which states that no vehicle operated on District highways shall have:

• Any object attached to or suspended from the rearview mirror or rearview mirror bracket
• Any object attached to or suspended from the windshield, the rear window, the front side windows, or the frames of any of these

This language is a blanket prohibition. It does not specify a size limit, a particular zone of the windshield, or a type of device. Any object attached to or suspended from the windshield violates this regulation.

What This Means in Practice

Unlike states such as California (which allows a 7-inch square in the lower corner) or Arkansas (which permits devices within 4.5 inches of the bottom), D.C. does not carve out any permitted zone for windshield-mounted devices. Air fresheners hanging from a mirror, suction cup GPS holders, phone mounts, and even decorative items all fall under this prohibition.

Law enforcement officers in D.C. can and do use this regulation as a basis for traffic stops.

Windshield Condition Requirements (18 DCMR 731)

18 DCMR Section 731 sets out the physical condition requirements for windshields and mirrors on vehicles operated in the District.

Key Requirements

Requirement	Regulation
No cracked, scarred, clouded, or defective windshield that obstructs vision	18 DCMR 731.2
Windshield wipers required on vehicles manufactured after January 1, 1938	18 DCMR 731.3
Wipers must cover both driver and passenger sides	18 DCMR 731.3
All wipers must be maintained in good working order	18 DCMR 731.4
Rearview mirror required	18 DCMR 731.6

A windshield with cracks or damage that impairs the driver's view is a separate, citable violation from the obstruction rules. While D.C. does not require annual safety inspections for most private vehicles, officers can issue citations for a damaged windshield during any traffic encounter.

Window Tint and VLT Requirements (DC Code 50-2207.02)

DC Code Section 50-2207.02 governs window tinting across all vehicle windows, including the windshield. D.C. requires 70% VLT on the windshield, making it one of the strictest jurisdictions in the nation for windshield tinting.

VLT Standards by Vehicle Type

Window	Standard Vehicles	Minivans
Windshield	70% VLT minimum	55% VLT minimum
Front side windows	70% VLT minimum	55% VLT minimum
Rear side windows	50% VLT minimum	35% VLT minimum
Rear windshield	50% VLT minimum	35% VLT minimum

Windshield Tint Strip Exception

The law allows a tint strip above the AS-1 line or within 5 inches from the top of the windshield with lower light transmittance. This is the only area of the windshield where darker tinting is permitted. Below that line, the full 70% VLT requirement applies.

The AS-1 line is a marking typically found on the windshield glass itself, placed by the manufacturer to indicate the boundary for factory tinting compliance with federal safety standards.

Exempt Vehicles

The tint law does not apply to:

• Limousines
• Ambulances
• Buses
• Hearses
• Church-owned vehicles
• Official government vehicles
• Vehicles with factory-installed tinting that meets federal standards
• Vehicles with approved medical exemptions

Medical Exemption Process

Drivers or vehicle owners with medical conditions requiring additional protection from sunlight can apply for a Vehicle Tint Waiver through the DC DMV. The process requires:

1. A letter on official letterhead from a physician, physician assistant, ophthalmologist, or optometrist
2. The letter must certify that protection from sunlight or bright lights is medically necessary
3. The letter must identify the specific medical condition
4. The completed Vehicle Tint Waiver Request Form must be submitted to the DC DMV Inspection Station
5. The waiver must be maintained in the vehicle at all times

Making a false statement on the waiver form is a violation of DC law (DC Official Code 22-2405), punishable by a fine of up to $1,000 or 180 days imprisonment or both.

GPS and Phone Mounts

Because 18 DCMR 2213.7 prohibits any object attached to or suspended from the windshield, suction cup GPS mounts and phone mounts on the windshield are not permitted in the District of Columbia.

Legal Alternatives

D.C. drivers who want to use a GPS or phone for navigation should consider these alternatives:

• Dashboard mounts that attach to the dash surface or use weighted, non-permanent bases
• Vent clip mounts that attach to the vehicle's air conditioning vents
• Console mounts that attach to the center console or cup holder area
• CD slot mounts for vehicles that still have a disc player
• Built-in vehicle navigation systems or Android Auto / Apple CarPlay integration

Any mounting solution must still allow the driver to operate the device hands-free to comply with DC Code 50-1731.04.

Dashcam Placement

D.C. does not have a specific dashcam statute. However, under the blanket prohibition in 18 DCMR 2213.7, a dashcam mounted on the windshield technically violates the regulation. The strictest reading of the law treats any windshield-attached device the same way, regardless of its purpose.

Drivers who want to use a dashcam in the District should consider mounting it on the dashboard rather than the windshield to avoid a potential citation.

Hands-Free Driving Law (DC Code 50-1731)

D.C. was one of the first jurisdictions in the country to enact a comprehensive hands-free law. The Distracted Driving Safety Act of 2004 (DC Code Chapter 17A) governs the use of mobile phones and electronic devices while driving.

What the Law Requires

Under DC Code 50-1731.04, drivers may not:

• Use or attempt to use a mobile phone or personal wireless communications device without a hands-free accessory
• Hold or attempt to hold a mobile phone or personal wireless communications device while driving
• Wear headphones covering both ears or earbuds in both ears (except for hearing-impaired drivers)

What Counts as "Hands-Free"

Under DC Code 50-1731.02, a "hands-free accessory" is any attachment, add-on, built-in feature, or addition to a mobile phone that allows the driver to maintain both hands on the steering wheel while using the device. This includes:

• Bluetooth connections to the vehicle's audio system
• Wireless earbuds (one ear only)
• Voice-activated controls
• Dashboard or vent-mounted cradles (operated by voice, not by hand)

Navigation Devices Are Treated Differently

The definition of "personal wireless communications device" in DC Code 50-1731.02 explicitly excludes navigation systems and emergency assistance devices installed in a vehicle. This means a dedicated GPS unit installed in the dashboard is not subject to the same restrictions as a mobile phone. However, a phone being used for navigation is still a "mobile telephone" under the law and must be operated hands-free.

Exceptions to the Hands-Free Law

The law allows phone use without a hands-free accessory in these situations:

• Emergency calls to 911, 311, hospitals, ambulance services, fire departments, law enforcement, or first aid squads
• Use by law enforcement and emergency personnel acting in official capacity
• Briefly initiating or terminating a phone call, or turning the phone on or off
• Using a device when the vehicle is safely and completely stopped off an active roadway

Additional Restrictions for Certain Drivers

Under DC Code 50-1731.05:

• Learner's permit holders and drivers under 18 may not use any mobile phone or electronic device while driving, even with a hands-free accessory, except in emergencies
• School bus drivers carrying passengers may not use any mobile phone or electronic device, even with a hands-free accessory, except for emergency calls to school officials

Penalties and Fines

D.C. enforces windshield and device violations through several overlapping penalty structures.

Windshield and Obstruction Violations

Violation	Regulation	Fine	Points
Object attached to/suspended from windshield	18 DCMR 2213.7	$75	Moving violation (varies)
Obstruction of driver's view	18 DCMR 2213.1	$75	Moving violation (varies)
Defective/obstructed windshield	18 DCMR 731.5	$75	None
No windshield wipers	18 DCMR 731.3	$75	None

Window Tint Violations

Violation	Statute	Fine	Additional Consequences
First tint violation	DC Code 50-2207.02	$50	Must present vehicle at inspection station within 5 business days
Failure to comply within 5 days	DC Code 50-2207.02	Up to $1,000	Vehicle may be ordered removed from public streets
Subsequent tint violation	DC Code 50-2207.02	Up to $5,000	Must pass re-inspection within 5 business days

Window tint violations carry no points on the driver's record. However, the escalating fine structure is significant. A first-time $50 ticket can become a $5,000 penalty for repeat offenders who fail to bring their vehicle into compliance.

Distracted Driving and Phone Violations

Violation	Statute	Fine	Notes
Using phone without hands-free	DC Code 50-1731.04	$100	First offense fine may be suspended with proof of hands-free purchase
Texting while driving	DC Code 50-1731.04	$100	No suspension available for texting violations
General distracted driving	DC Code 50-1731.03	$100	Broad catch-all provision
Minor/learner's permit phone use	DC Code 50-1731.05	$100	No hands-free exception

All distracted driving violations are processed as moving violations but carry no points.

How the Laws Interact

D.C.'s windshield laws create a layered regulatory framework. Here is how the rules work together in common scenarios:

Phone mounted on windshield with suction cup: Violates 18 DCMR 2213.7 (object on windshield). If the driver is also holding or touching the phone while driving, it separately violates DC Code 50-1731.04 (hands-free requirement). Two separate citations are possible.

GPS unit mounted on windshield: Violates 18 DCMR 2213.7. Even though dedicated GPS devices are excluded from the distracted driving law's device definition, the physical mounting on the windshield still violates the obstruction regulation.

Phone on a dashboard mount, operated by voice: This complies with all D.C. laws. The phone is not on the windshield (no 2213.7 violation), and the driver is using a hands-free method (no 50-1731.04 violation).

Dark windshield tint plus a mounted device: Could result in three separate citations: tint violation (50-2207.02), obstruction (2213.7), and potentially a hands-free violation (50-1731.04) if the device is a phone being held.

Toll Transponders and Parking Permits

E-ZPass transponders and similar electronic toll collection devices are commonly mounted on windshields nationwide. While 18 DCMR 2213.7 contains no explicit exemption for toll transponders, these small devices are generally tolerated by law enforcement because they do not meaningfully obstruct the driver's view and serve a government-endorsed transportation function. D.C. residential parking permits (zone stickers) are typically displayed on bumpers or rear windows, not the windshield, which avoids the 2213.7 issue.

Drivers should place toll transponders as inconspicuously as possible, ideally behind the rearview mirror area, to minimize the risk of a citation.

Recent Changes and Updates (2024 to 2026)

Vision Zero Enhancement Omnibus Amendment Act of 2020 (D.C. Law 23-158)

This law strengthened the distracted driving framework by prohibiting drivers from wearing headphones over both ears or earbuds in both ears while driving (with an exception for hearing-impaired drivers). It also removed a prior provision that shielded distracted driving violations from point assessment when they did not contribute to an accident.

STEER Act of 2024 (D.C. Law 25-161)

The Strengthening Traffic Enforcement, Education, and Responsibility Amendment Act of 2024 amended various motor vehicle laws, including clarifications to offenses affecting license suspension and reinstatement requirements. While it did not directly change windshield mounting rules, it reflects D.C.'s ongoing commitment to stricter traffic enforcement.

No Changes to Core Obstruction Rules

As of March 2026, the core windshield regulations in 18 DCMR 2213 and 18 DCMR 731 have not been amended. The blanket prohibition on windshield-attached objects remains in full effect. The 70% VLT standard for windshields under DC Code 50-2207.02 also remains unchanged.

More D.C. Laws

• District of Columbia Recording Laws
• District of Columbia Statute of Limitations