Road sign questions make up a significant portion of every state's DMV written test. The good news is that once you learn the system behind sign shapes and colors, identifying them becomes second nature. Here are the 25 signs you're most likely to see on test day.
Key Principle: You can often identify a sign's purpose by its shape and color alone — even without reading the text. This is by design, so drivers can recognize signs from a distance or in poor visibility.
Sign Colors & What They Mean
- Red — Stop, yield, or prohibition (do not)
- Yellow — Warning of hazards or changes ahead
- Green — Direction and distance information
- Blue — Motorist services (gas, food, lodging, hospital)
- Orange — Construction and work zones
- Brown — Recreation and cultural interest areas
- White — Regulatory information (speed limits, lane usage)
Sign Shapes & What They Mean
- Octagon (8 sides) — Stop sign only
- Inverted triangle — Yield sign only
- Diamond — Warning signs
- Rectangle (vertical) — Regulatory signs
- Rectangle (horizontal) — Guide signs
- Pentagon (5 sides) — School zone signs
- Circle — Railroad advance warning
- Crossbuck (X shape) — Railroad crossing
- Pennant (triangle pointing right) — No passing zone
Regulatory Signs (Red & White)
- Stop Sign — Red octagon. Come to a complete stop at the white line or before the crosswalk.
- Yield Sign — Red and white inverted triangle. Slow down and give right-of-way to traffic already in the intersection.
- Do Not Enter — Red circle with white horizontal bar. You are approaching a one-way road from the wrong direction.
- Wrong Way — Red and white rectangle. Confirms you are traveling the wrong direction on a one-way road. Turn around immediately.
- No U-Turn — White rectangle with red circle and line through a U-turn arrow. U-turns are prohibited.
- Speed Limit — White rectangle with black numbers. The maximum legal speed in ideal conditions.
- One Way — Black and white rectangle with arrow. Traffic flows in one direction only.
Warning Signs (Yellow Diamond)
- Curve Ahead — Arrow showing the direction of the curve. Slow down before entering.
- Merge — Two lanes coming together. Be prepared to share the road.
- Pedestrian Crossing — Person walking symbol. Watch for pedestrians and be prepared to stop.
- School Zone — Pentagon shape with figures of children. Reduce speed during school hours.
- Deer Crossing — Deer silhouette. Wildlife frequently crosses in this area.
- Slippery When Wet — Car with wavy lines. Road surface is slick in wet conditions.
- Railroad Crossing Advance Warning — Yellow circle with an "X" and "RR." A railroad crossing is ahead.
- Divided Highway Begins/Ends — Shows the road splitting or merging.
- Two-Way Traffic — Two arrows pointing in opposite directions. The road ahead has traffic in both directions.
- Hill/Grade — Truck on a slope. Steep hill ahead — watch your speed and braking.
Guide & Information Signs
- Interstate Highway Sign — Red, white, and blue shield. Identifies interstate routes.
- US Route Marker — Black and white shield. Identifies US highway routes.
- Hospital Sign — Blue with white "H." Indicates a hospital is nearby.
- Green Exit Signs — Shows highway exit information, destinations, and distances.
Construction & Special Signs
- Construction Zone — Orange diamond. Road work ahead — slow down and watch for workers.
- Detour — Orange with arrow. Follow the alternate route around construction.
- Slow Moving Vehicle — Orange reflective triangle on the back of a vehicle traveling under 25 mph.
- No Passing Zone Pennant — Yellow pennant on the left side of the road. Do not pass other vehicles in this area.
Test-Taking Tips for Road Sign Questions
- If a question asks about an unfamiliar sign, use the shape and color to narrow down the answer
- Remember: red means stop or don't, yellow means caution, green means go/information
- Warning signs tell you what's ahead — they don't give commands
- Regulatory signs give commands — you must obey them
- Practice with actual sign images, not just text descriptions
Practice Road Sign Questions with Images
DMV Test Prep 2026 includes visual sign images so you can practice identifying signs just like on the real test.
Download Free on Google Play