Warning signMUTCD W3-3Diamond · yellow
Signal Ahead Sign
What it means
A traffic signal is ahead that you may not see yet.
What you should do
Slow down and be ready to stop for the light.
Don't confuse it with
Stop Ahead (W3-1)A stop sign is ahead.
Check yourself · 3 questions
Question 1 of 3Warning
What does this sign mean?
Tip: press 1–4 to answer.
More warning signs
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Yield Ahead
Winding Road
Bicycles
Cattle Crossing
Dead EndSign image: public domain, via Wikimedia Commons. Sources