Sign Colors and Shapes: The Fastest Way to Classify a Sign
What this domain tests
Color and shape let you classify a sign before you read it. The exam tests standard color meanings and the shapes that identify STOP, YIELD, warning, school, and route signs.
Core rules
- Red means stop or prohibit; yellow means warning; white means regulatory; orange means construction; green means guide; blue means services; brown means recreation.
- Fluorescent yellow-green marks school, pedestrian, and bicycle warnings.
- Octagon = STOP; inverted triangle = YIELD; diamond = warning; pentagon = school; rectangle = regulatory or guide; shield = route.
- A red circle with a diagonal slash means prohibited. A black legend on white usually means a regulatory requirement.
- Shape and color work together; a yellow diamond is not a speed limit even if it contains a number.
Worked example
A white rectangular sign with black NO PARKING and a red slash is regulatory: it prohibits parking. The white background and prohibition symbol both point to a legal restriction. By contrast, a brown sign with a picnic symbol is recreational information, and a yellow diamond with a pedestrian symbol is a warning to watch for people.
Traps that cost marks
Do not classify by color alone; a white sign can be regulatory, while a green sign is guide. Do not mistake a brown recreation sign for a service sign. Do not call a pentagon a warning diamond. Do not assume a red slash means stop; it means the pictured action is prohibited.