California road signs — shapes, colors & meanings
You can read most road signs before you read a single word on them — the shape and color tell you what kind of sign it is. Learn the system, then the ~45 signs below fall into place. When you've studied them, test yourself on the signs below — the flashcard mode hides each meaning so you can check your recall.
What each sign shape means
The outline alone often tells you the sign — two shapes are reserved for a single message each.
Always STOP. A full stop, then go when it is clear.
Always YIELD. Slow and give the right-of-way.
A warning — a hazard or change in the road ahead.
A school sign — you are near a school or crossing.
A regulatory sign — a law you must obey, like a speed limit.
A guide sign — directions, distances, and destinations.
A railroad-crossing warning ahead.
Marks the railroad crossing itself.
A no-passing zone, posted on the left.
What each sign color means
Color signals the sign's purpose before you're close enough to read it.
Stop, yield, or prohibited.
A general warning of what is ahead.
A construction or maintenance work zone.
Guidance — directions and destinations.
Motorist services — gas, food, lodging, hospital.
Recreation, parks, and scenic or historic areas.
Regulatory — a traffic law, usually in black.
Pedestrian, bicycle, and school warnings.
The shapes and the red, yellow, orange, green, and white color meanings are from the California Driver Handbook. Brown, blue, the no-passing pennant, and the other standard signs follow the California MUTCD / Caltrans sign charts, which the handbook points to for the full catalog. Each sign below carries its source.
Every sign shows its shape, color, and meaning. Turn on Test yourself to hide the meanings and tap a sign to reveal.
Regulatory signs
These state a law — what you must, must not, or may do. Most are white or red rectangles, plus two shapes reserved for one message each: the STOP octagon and the YIELD triangle.
Make a full stop at the limit line, crosswalk, or before the intersection. Go only when it is safe.
Slow down, be ready to stop, and give the right-of-way before you proceed.
Do not enter the road or ramp here — often a one-way street or a freeway off-ramp.
You are heading against traffic. Slow down and turn around when it is safe.
The maximum legal speed in ideal conditions. Drive slower when it is wet, foggy, or crowded.
Traffic moves only in the direction the arrow points.
U-turns are not allowed where this is posted.
Do not turn while the light is red at this intersection.
The turn shown is prohibited here — a red circle and slash means "no".
Stay to the right of a divider, island, or obstruction.
Passing other vehicles is not allowed on this stretch of road.
A pennant on the left marks a no-passing zone — do not pass here.
A carpool lane, marked with a white diamond — limited to vehicles meeting the posted occupancy during posted hours.
Warning signs
Yellow diamonds that flag a hazard ahead so you can slow down early. Warnings for people on foot or bikes, or near schools, are fluorescent yellow-green.
A hazard or change is ahead — a curve, dip, narrowing road, or crossing. Slow down and stay alert.
The road bends ahead. A "turn" is sharper (safe speed under 35 mph) and a "curve" is gentler — either way, slow down.
A series of curves is ahead.
Traffic merges in from the side ahead. Adjust your speed to let it blend in.
A lane ends ahead — merge into the continuing lane in turn.
The road splits into two one-way roadways ahead. Keep right.
The divider ends ahead and the road returns to two-way traffic.
You are leaving a divided road — watch for oncoming traffic.
A traffic signal is ahead. Be ready to stop.
A stop sign or yield sign is coming up. Prepare to slow or stop.
The road gets slick in wet weather. Slow down, and avoid hard braking or sudden turns.
Watch for people crossing the road ahead.
Watch for bicyclists sharing the road ahead.
Animals may enter the road here — be ready to slow or stop.
A steep downgrade is ahead. Shift to a lower gear to save your brakes.
A roundabout is ahead. Slow down and yield to traffic already in the circle.
The road ahead ends with no way through.
Work-zone signs
Orange means road work. Watch for workers and equipment, follow the cones and flaggers, and expect reduced speed limits.
Construction or maintenance is ahead. Slow down and stay alert — traffic fines are doubled when workers are present.
A flagger is directing traffic ahead. Follow their signals.
Follow the marked alternate route around a closure.
The road or a lane is closed ahead. Merge early and follow the directions.
Guide & services signs
Signs that help you navigate. Green gives directions and destinations, blue points to motorist services, and brown points to parks and scenic areas.
Green signs give directions, distances, exits, and destinations.
Identifies the highway or route number you are on.
Points to nearby services — gas, food, lodging, a hospital (the H), or a rest area.
Points to parks, recreation, and scenic or historic areas.
Railroad, school & placards
Special cases worth knowing on sight: the railroad crossing (round advance warning, then the X-shaped crossbuck), the school pentagon, and two vehicle markers.
A railroad crossing is ahead. Look, listen, slow down, and be ready to stop for a train.
The X marks the crossing itself. Yield to any train, and never stop on the tracks.
A small plate below the crossbuck showing how many tracks cross the road.
You are near a school. Slow down and stop for children in the crosswalk.
Watch for children crossing near a school.
A reflective orange triangle on the back of a vehicle means it travels 25 mph or less — slow as you approach.
A diamond placard on a truck warns its load may be dangerous — flammable, explosive, or toxic.
The DMV knowledge test includes road-sign questions. See what to study and where to take the official test.
Frequently asked questions
The shape and color questions people ask most.