Flashing Yellow Light Meaning, Plus Red and Arrows
By The Permi team · Updated · Published
Short answer: A flashing yellow light means slow down and watch for traffic. You do not have to stop. A solid yellow means red is coming, so stop if you can do it safely. A flashing red means stop completely, then go when it is clear.
This guide follows the California Driver's Handbook (2025 edition). Rules differ by state, so confirm in your own handbook.
Every light and arrow at a glance
| Signal | Meaning | What to do |
|---|---|---|
| Solid yellow light | Red is about to appear | Stop if you can do so safely. If you cannot, continue through with care |
| Yellow arrow | The protected turn is about to end | If you cannot stop safely, or you are already in the intersection, finish the turn and check the next signal |
| Flashing yellow light | Caution | Slow down and stay alert. Stopping is not required |
| Flashing yellow arrow | A left turn is allowed, but oncoming cars are not held back | Let oncoming traffic pass, then turn with care |
| Flashing red light | Stop | Come to a full stop, then go when the way is clear, as you would at a stop sign |
| Red arrow | Stop, and do not turn in that direction | Wait for a green light or green arrow |
| Green arrow | A protected turn | Go in the arrow's direction. Oncoming cars face a red light |
| Solid green light | Go, with care | Give way to anyone still in the intersection, and enter only if you can clear it before the light changes |
| Signal not working | Treat it like stop signs on every side | Stop, then proceed carefully when it is safe |
The solid yellow decision
New drivers often freeze at a yellow. Ask one question:
- Can I stop safely? If yes, stop.
- If not, go through carefully.
Yellow warns you that red is next. It is not a cue to speed up.
Easy ones to mix up
- Flashing red works like a stop sign. Full stop first.
- Flashing yellow is only a warning. Slow down and look, no stop.
- A flashing yellow arrow means turn after yielding. The handbook describes it for left turns.
FAQ
What does a flashing yellow light mean?
Slow down and be ready for traffic or people crossing. You may keep going if it is safe.
Do I have to stop at a flashing yellow light?
No. It is a warning, not a stop.
What does a flashing red light mean?
Stop fully, just as at a stop sign, and go once the way is clear.
What if the traffic light is out?
Treat the intersection as a stop sign in every direction. Stop, then go when it is safe.
Practice this topic in the free California quiz. Permi turns the handbook into short lessons and practice questions with an explanation for every answer, in English and Spanish. Get access for the full course.
Sources
- California DMV, California Driver's Handbook, traffic signal lights section (2025 edition), used for each signal's meaning. Written in our own words.