Signal Ahead: What It Means & What To Do
MUTCD CodeW3-3
CategoryWarning Signs
ShapeDiamond
ColorYellow with black
What Does the Signal Ahead Mean?
A traffic signal is ahead. Be prepared to stop.
About This Sign
This sign warns of a traffic signal that may be hard to see in advance, giving drivers time to prepare.
Where you will see it
You see this sign before a traffic signal that may be hard to spot from far away, for example around a curve or over a hill.
What to do
- Slow down and look ahead for the signal.
- Be ready to stop if the light is yellow or red.
- Watch for vehicles stopped or turning near the signal.
A common mistake
Some drivers speed up to get through before they can even see the light. Since the signal may be hidden, plan to stop and only continue if the light allows it.
What to remember for the test
This sign shows a traffic light in a yellow diamond. It is a warning only, so the rules of the signal itself apply once you can see it.
Commonly Confused With
Other Warning Signs
Frequently Asked Questions
What does the Signal Ahead mean?
A traffic signal is ahead. Be prepared to stop.
What shape and color is the Signal Ahead?
The Signal Ahead uses the Diamond shape and Yellow with black coloring.
Practice Road Sign Questions
Test your knowledge of road signs with free DMV practice tests.