Signs, signals and markings in District of Columbia
Signs, signals and markings in DC follow the same national standards used across the United States, so shapes and colors carry the same meaning everywhere. The knowledge test includes sign questions, and the road test examiner watches that you notice and obey them.
City driving adds extra layers: bus and bike lanes, busy crosswalks, turn restrictions and detailed parking signs. Reading them quickly is a core DC skill.
By the end of this topic you can
- You can identify common signs by shape and color before you can read the words.
- You can respond correctly to steady and flashing signals and arrows.
- You can explain what yellow and white lines, solid and broken, tell you.
- You can spot special lanes and turn restrictions common in DC.
What you need to know and understand
- An eight-sided red sign always means stop. A downward-pointing triangle means yield.
- Yellow diamond signs warn of hazards ahead. White rectangles state rules, such as speed limits.
- Orange signs mark work zones, where DC doubles fines for moving violations.
- Fluorescent yellow-green signs often mark school and pedestrian crossings.
- Yellow center lines separate traffic moving in opposite directions. White lines separate lanes going the same way.
- A solid line on your side means do not cross to pass. A broken line means you may pass when it is safe.
- A flashing red light means stop fully, then go when safe. A flashing yellow light means slow down and proceed with care.
Shapes and colors you should know on sight
- Octagon, red: stop.
- Triangle pointing down, red and white: yield.
- Diamond, yellow: warning, such as a curve or merge.
- Pentagon, yellow-green: school zone or school crossing.
- Round, yellow: railroad crossing ahead.
- Rectangle, white: regulatory, such as speed limit or NO TURN ON RED.
- Rectangle, green: directions and distances. Blue: services. Brown: parks and recreation, common around DC's national parks.
Signals and arrows
A steady green arrow means you may turn in that direction with protected right of way, though you must still watch for pedestrians finishing their crossing. A steady red arrow means no turn in that direction until it changes. A flashing yellow arrow means you may turn left but must yield to oncoming traffic and pedestrians. Pedestrian signals with a countdown help you judge whether people are still crossing as your light turns green.
City lanes and markings
- Bus lanes: marked with words on the pavement and signs, often with colored paint. Follow the signs for when other vehicles may use them, usually only to turn.
- Bike lanes: marked with white lines and bike symbols, sometimes with green paint at conflict points. Check before crossing them to turn.
- Crosswalks: white bars or lines. Stop for pedestrians in them as DC law requires.
- Stop lines: wide white lines where you must stop at a sign or red light.
- Curb and parking signs: read every panel, since limits often change by time of day.
Common mistakes
- Treating a flashing red light like a yield. It means a full stop first.
- Turning into a bus lane too early. Enter only where signs and markings allow.
- Missing NO TURN ON RED signs, which are common at DC intersections.
- Crossing a solid yellow line to pass a slow vehicle.
Test yourself: Signs, signals and markings in District of Columbia
Answer each question, then read the explanation. Questions come in a random order each time.
Loading questions…
Go deeper
Sources: DC DMV Automobile Driver Manual (updated January 2024), DC DMV; Manual on Uniform Traffic Control Devices, Federal Highway Administration; Speeding Laws, Fines and Safety Tips, District Department of Transportation (ddot.dc.gov). Independent guide, not affiliated with any licensing agency. Always check the latest official rules with the District of Columbia licensing agency.