Road Sign Recognition
64 standard U.S. signs (MUTCD) across 7 categories. Tap any sign for details.
Read shape & color first
Even before you read the words, the shape and color tell you what kind of sign it is. An octagon always means stop. A diamond is a warning. A pentagon is a school zone. This is by design — so drivers can react from a distance, in fog, or with a faded face.
How to use this module
Skim the Learn catalog, drill in Quiz, flip Flashcards, and play Mystery (shape→color→meaning). A new Daily challenge each day. Press 1–6 to jump between views.
Shape language
Octagon
Stop — only used for STOP.
Inverted Δ
Yield — only used for YIELD.
Diamond
Warning ahead.
Pentagon (up)
School zone / crossing.
Pennant
No-passing zone (left side).
Circle
Railroad crossing ahead.
Rectangle
Regulatory or guide info.
Shield
Route marker.
Color language
Red
Stop, yield, prohibition.
Yellow
General warning.
Orange
Construction / work zone.
Yellow-green
School / pedestrian / bicycle.
Green
Guidance, mileage, exits.
Blue
Motorist services.
Brown
Recreation, scenic, historic.
White
Regulatory (speed, lane use).
Quiz
Pick the meaning that matches the sign.
Flashcards
Tap (or press Space) to flip. J next, K previous.
Mystery — shape + color
Use the shape and color rules to guess the sign before seeing the icon.
How shape+color narrows it down
An octagon can only be one sign: STOP. A red circle with a slash is always a prohibition. A pentagon facing up is always a school zone. Reading shape and color first turns 64 signs into a handful of candidates — even before the legend is readable.
Streak: 0 · Longest: 0
One question a day, seeded by date. Come back tomorrow.
Teacher mode
Printable handouts and lesson plans.
Print the full catalog
Browser-friendly sign reference, 64 signs grouped by category.
Lesson plan (45-min)
5-min shape/color rules · 15-min catalog walk · 15-min quiz round · 10-min mystery game wrap-up.
Worksheet — match meaning
24 signs, 24 meanings. Students draw lines. Includes answer key.
Reference
Federal Highway Administration Manual on Uniform Traffic Control Devices (MUTCD), 2009 ed. with 2012 revisions.
MUTCD site →