What shape are signs that notify you of upcoming hazards?

Signs that notify you of upcoming hazards are specifically designed to convey important information about potential dangers on the road. The use of a yellow diamond shape is a standardized convention that makes these warning signs easily recognizable. The color yellow indicates caution, while the diamond shape signifies that the driver should be alert to changing conditions or significant hazards ahead.

For instance, you might see yellow diamond-shaped signs indicating sharp turns, slippery roads, or pedestrian crossings. This design effectively communicates to drivers that they need to slow down, be aware of their surroundings, or prepare for sudden changes in the roadway.

Other shapes and colors serve different purposes: square and red typically signify regulatory signs (like stop signs), round and green are often used for guide signs (like highway exits), and rectangles in blue can indicate services or information, but none of these options carry the hazard notification feature that is inherent in the yellow diamond shape.