California Car / Permit practice question · Road Signs
What does a yellow diamond-shaped sign showing a traffic signal (red, yellow, green) mean?
Answer choices
- The road ahead ends and does not connect to another road.
- A railroad crossing is ahead; slow down and be ready to stop for trains.
- The roadway becomes narrower ahead.
- A traffic signal is ahead; prepare to slow or stop.— Correct answer
Why this is the answer
A diamond-shaped sign showing a traffic signal is the Traffic Signal Ahead warning sign. It tells you a signal is coming up, so be prepared to slow or stop. It does not mean the road ends, and railroad crossings have their own warning signs. Diamond-shaped signs warn you of specific road conditions and dangers ahead.
Source: California Driver Handbook — Traffic Signs
Content reviewed against official driver handbooks · August 12, 2026
More Road Signs questions
- You approach a white circular sign showing a bicycle crossed out in red. What does it tell you to do?
- Roads marked with NEV ROUTE or NEV USE ONLY signs are telling you to watch for:
- You approach a white rectangular sign posting a weight limit in tons. What does it tell you to do?
- What does a red, eight-sided (octagonal) sign always mean?
- A yellow, diamond-shaped sign is used to: