Road signs in United States
Yellow diamonds and green blades
Yellow diamond warning signs, black-on-yellow chevrons and green street-name blades are classic United States.
- Warning signs are yellow diamonds; school and crossing signs are fluorescent yellow-green.
- The give-way sign says YIELD.
- Street names are on green blades at the corner.
22 photos, grouped by the clue they show.
Key clue Yellow diamond 6
Key clue STOP sign 5
Key clue YIELD sign 1
Key clue Pedestrian diamond 3
Key clue Yellow-black chevron 4
Key clue Green street sign 3
United States: what its road signs look like
American warning signs are yellow diamonds, and school and crossing signs are often fluorescent yellow-green. Bends get black-on-yellow chevrons.
The give-way sign says YIELD, speed limits are in mph on white rectangles, and street names are on green blades at the corners.
The same style is used across the United States.
Look-alikes: how to tell them apart
United States vs 
Canada
Mexico
Canada uses yellow diamonds too, but in km/h, and ARRÊT in Quebec. Mexico's stop sign says ALTO.
Questions about road signs in United States
Why are American warning signs diamonds?
The United States uses a yellow diamond for warnings, a style also used in Canada, Mexico, Australia and other countries.
What does the US give-way sign say?
YIELD, on a red-and-white upside-down triangle.