Traffic Signal Ahead Sign
A traffic signal is ahead, often where it is hard to see in time
In short: A Traffic Signal Ahead sign warns that a traffic light is ahead, typically where a curve, hill, or obstruction hides it until late. Slow down and be prepared to stop in case the signal is red when it comes into view.
What to do
Slow down and be prepared to stop for a red light.
Tips
Common before curves or hills that hide the signal.
Test yourself
You see this sign while driving. What do you have to do?
Show the answer
Slow down and be prepared to stop for a red light.
Common mistake
Approaching too fast to stop for a red light
How to recognize this sign
Also searched as traffic signal ahead, signal ahead sign, or traffic light ahead sign.
About warning signs
Warning signs are diamond-shaped and yellow with black symbols. They alert you to hazards ahead — curves, intersections, crossings — so you have time to slow down. On the DMV written test, expect several questions asking what a specific warning sign means and what action it calls for.
Practice questions about this sign
This sign showing a traffic signal symbol warns that:
- A. The speed limit changes at the next signal
- B. The traffic signal ahead is malfunctioning
- C. A railroad signal is ahead
- D. A traffic signal ahead may be hard to see in time
Show answer
D. A traffic signal ahead may be hard to see in time — This advance warning sign is placed where a traffic signal is difficult to see until close range, giving drivers time to slow down and prepare to stop.
Universal rule · checked against MUTCD 11th Edition, Part 2 — Signs (General) — Traffic Signs — General · verified 2026-08-01
Frequently asked questions
What does the Traffic Signal Ahead Sign mean?
A traffic signal is ahead, often where it is hard to see in time
What should you do at a Traffic Signal Ahead Sign?
Slow down and be prepared to stop for a red light.
Reference standard: Federal Highway Administration Manual on Uniform Traffic Control Devices ↗. State and local agencies may add rules or operating times, so follow the complete posted sign where you drive. How DMV Prep sources content.
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