
District of Columbia Bicycle Laws
Last reviewed by BikeSize EditorialAn overview of District of Columbia's bicycle laws, reviewed and cited to primary sources. Use the sections below to jump to a specific rule, or the Sources block at the end for the full citation list.
This guide is for general information only and is not legal advice. Laws change - verify current rules with your state DOT or a licensed attorney before relying on this for any legal matter. Read full disclaimer.
Helmet rules
- Required under age
- Required under age 16
- Applies to passengers
- Yes
- Standard
- ANSI, Snell or ASTM F1447 (a CPSC-certified helmet satisfies all three).
- Penalty
- Civil violation. The Mayor may impose a fine of up to $25 for a first offense; the fine is waived on proof that the minor has obtained a conforming helmet and completed a bicycle-safety course.
- Statute
- 1
See our find your helmet size and kids bike sizing guide.
Sidewalk riding
- Statewide rule
- Allowed with conditions
- Notes
- 18 DCMR § 1201.9 prohibits riding a bicycle on a sidewalk within the Central Business District (broadly bounded by Massachusetts Avenue NW, 23rd Street NW, Constitution Avenue NW and 2nd Street NE). Outside that zone, sidewalk cycling is permitted; riders must yield the right-of-way to pedestrians and give an audible signal before overtaking and passing under § 1201.10.
- Statute
- 1
See our commuter bike sizing guide and bike fitting guide.
DUI on a bicycle
- Applies to bicycles
- Yes
- Separate cycling DUI statute
- No
- BAC limit
- 0.08
- Penalty
- D.C. Code § 50-2206.11 makes it unlawful to operate or be in physical control of any 'vehicle' while under the influence, and § 50-2201.02 defines vehicle to include bicycles. A bicycle DUI carries the same statutory penalties as an auto DUI - a fine of up to $1,000 and up to 180 days in jail on a first offense - although the mandatory driver-licence revocation only attaches if the rider holds a D.C. licence.
Hand signals
— Not yet researched.
Lights & reflectors
- Front light required
- Yes
- Front spec
- White lamp on the front, visible from a distance of at least 500 feet.
- Rear requirement
- Rear reflector or light
- Rear spec
- Red reflector on the rear of a type approved by the Director of the Department of Transportation, visible from a distance of 50 to 300 feet. A red rear lamp visible from 500 feet may be used in addition to the reflector.
- Side reflectors
- No
- Pedal reflectors
- No
- When required
- Darkness
- Statute
- 1
See our bike lights that meet the law and winter and low-light cycling setup.
Bike-lane rules
— Not yet researched.
Group riding & two-abreast
- Two abreast allowed
- Yes
- Conditions
- 18 DCMR § 1201.6 permits riding two abreast where it does not impede traffic.
- Statute
- 1
Headphones & earbuds
- Rule
- —
- Statute
- —
Child passengers
— Not yet researched.
Registration & licensing
- Bicycle registration required
- No
- Operator license required
- No
Highways & interstates
- Interstates
- Prohibited
- Notes
- Bicycles are prohibited on all freeway segments in the District (the I-66, I-295, I-395, and I-695 segments). The District has no rural Interstate mileage; all Interstate segments are urban controlled-access roadways signed prohibited at every on-ramp.
Sources
- D.C. Code § 50-1606 (Bicycle helmets required for persons under 16)
- 18 DCMR § 1201.9-1201.10 (Bicycles on sidewalks)
- D.C. Code § 50-2206.11 (Operating a vehicle under the influence)
- D.C. Code § 50-2201.02 (Definitions - 'vehicle' includes bicycle)
- 18 DCMR § 1204 (Bicycle equipment - lamps and reflectors)
- 18 DCMR § 1201.6 (Riding bicycles two abreast)
One size question, fifty answers
Find the right bike (and helmet) size for your rider
State helmet and child-passenger rules cover what you must wear. Our calculators cover what will actually fit.
Open the kids bike size calculator