Key Traffic Laws Every DC Driver Should Know

Driving in Washington, D.C. comes with a unique set of rules designed to promote safety and reduce congestion in the nation’s capital. Whether you're a new driver, a daily commuter, or just visiting, it's important to understand the District's most critical traffic laws to avoid fines, license points, or more serious consequences.

Speed Limits and Automated Enforcement

In most residential areas across D.C., the default speed limit is 20 mph, recently reduced under the District’s Vision Zero initiative. On arterial roads, the speed limit is typically 25 to 35 mph, unless otherwise posted. School zones have strict speed restrictions, generally 15 mph during designated hours.

Washington, D.C. uses automated traffic enforcement cameras extensively to enforce speed limits, red-light compliance, and stop sign violations. These systems issue tickets by mail and do not require officer interaction.

Learn how these rules are enforced under the STEER Act and Its Impact on DC Drivers.

Right-of-Way and Pedestrian Priority

D.C. law mandates that drivers must yield the right-of-way to pedestrians at all crosswalks—marked or unmarked. This includes when turning at intersections or approaching a crosswalk where a pedestrian is crossing or about to cross. Failing to yield can result in significant fines and points on your license.

Cyclists are also given special consideration under D.C. law, often sharing equal rights on the road. Motorists must maintain at least 3 feet of clearance when passing bicycles.

Distracted Driving Laws

Washington, D.C. prohibits all drivers from using handheld devices while driving. This includes texting, emailing, and holding a phone call. Hands-free devices are allowed, but drivers under 18 with a learner’s permit or provisional license are not allowed to use any phone, even hands-free.

Violations can lead to fines and points on your driving record. Repeated offenses can trigger higher penalties and even suspension of driving privileges.

DUI and Impaired Driving Rules

D.C. has strict DUI laws, with a legal Blood Alcohol Concentration (BAC) limit of 0.08% for most drivers. However, commercial drivers are limited to 0.04%, and any measurable alcohol for drivers under 21 is illegal.

The District enforces zero-tolerance for drug-impaired driving, and penalties for driving under the influence include heavy fines, license suspension, and possible jail time—even for a first offense.

Explore the implications of these violations in the Point System for Traffic Violations.

Use of Seat Belts and Child Restraints

All vehicle occupants in D.C. are required to wear seat belts, regardless of their seating position. The driver is responsible for ensuring passengers under 16 are properly restrained.

Child safety seats are mandatory for all children under 8 years old unless the child is taller than 4 feet 9 inches. Children under 2 must ride in a rear-facing car seat unless they exceed height or weight limits specified by the seat manufacturer.

Parking Rules and Towing Regulations

The District enforces numerous parking restrictions, including residential permit parking, street cleaning schedules, and emergency no-parking zones. Illegally parked vehicles are subject to ticketing and towing.

Additionally, D.C. uses parking enforcement cameras and has a booting program for vehicles with outstanding tickets. Drivers should be vigilant about posted signs and regulations.

Unique DC Driving Considerations

Washington, D.C.’s traffic grid includes many one-way streets, traffic circles, and high-traffic federal zones. It’s important to stay alert and always check for signage, especially near embassies and federal buildings where special security rules may apply.

Understand your full responsibilities when acquiring a license in D.C. by reviewing How to Obtain a Driver's License in Washington, D.C..

Related Resources

For more essential guidance, see:

For full, up-to-date traffic regulations, visit the District Department of Transportation (DDOT) and DC DMV.