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Multiple Choice

Which color/shape indicates a typical warning sign?

Warning signs use a bright yellow color and a diamond shape to alert you to hazards ahead. The yellow color signals caution, so you slow down and look for what might be ahead. The diamond shape is the standard shape used for warnings, making them quickly recognizable even at a glance. A red octagon is the stop sign, which is a regulatory command to stop. A green circle and a blue rectangle are used for other purposes (green often for permitted directions or movements, blue for services or informational guidance). Because the combination of yellow and diamond uniquely marks a warning, that is why this option is correct.

Warning signs use a bright yellow color and a diamond shape to alert you to hazards ahead. The yellow color signals caution, so you slow down and look for what might be ahead. The diamond shape is the standard shape used for warnings, making them quickly recognizable even at a glance.

A red octagon is the stop sign, which is a regulatory command to stop. A green circle and a blue rectangle are used for other purposes (green often for permitted directions or movements, blue for services or informational guidance). Because the combination of yellow and diamond uniquely marks a warning, that is why this option is correct.