What Should You Do When You See a Flashing Yellow Traffic Signal at the Next Intersection?
Slow down and proceed with caution. A flashing yellow light means the intersection is not stopped for your direction, so you do not have to stop, but you must reduce speed, stay alert, watch for cross traffic and pedestrians, and yield if necessary.
The answer
When you approach an intersection controlled by a flashing yellow signal, the correct action is to slow down and proceed with caution. A flashing yellow tells you the intersection is not fully stopped for your direction of travel. You have the right to continue without coming to a complete stop, but only after you have reduced your speed, scanned the intersection, and made sure it is safe. Be ready to yield to any vehicle or pedestrian already in or entering the intersection.
Think of a flashing yellow as a "caution" signal rather than a "go" signal. It is commonly used late at night or during off-peak hours on the main road of an intersection where the side street faces a flashing red. It can also indicate a warning zone near a school, crosswalk, or hazard ahead.
Flashing yellow vs. flashing red vs. solid yellow
Students lose points here because these three signals look similar but demand different actions:
- Flashing yellow = caution. Slow down, stay alert, proceed when safe. No stop required.
- Flashing red = same as a STOP sign. Come to a complete stop, yield to cross traffic and pedestrians, then go when clear.
- Solid (steady) yellow = the light is about to turn red. Stop if you can do so safely; do not speed up to beat the light.
At a typical two-way flashing intersection, the busier road gets the flashing yellow and the smaller road gets the flashing red, which is why the flashing-yellow driver generally has the right of way but still must stay watchful.
A newer signal, the flashing yellow arrow, appears on left-turn lanes. It means you may turn left after yielding to oncoming traffic and pedestrians. The turn is permitted, but oncoming vehicles have priority.
Why the other options are wrong
Drivers often choose "come to a full stop" — but that is the rule for a flashing red light, not yellow. Stopping unnecessarily at a flashing yellow can actually cause a rear-end collision because following drivers do not expect it.
"Speed up to clear the intersection" is also wrong and dangerous. A flashing yellow is a warning to be more careful, not less. Increasing speed removes your margin to react to a car that fails to stop at the cross street.
"Treat it exactly like a green light and proceed normally" is incorrect too. A green light gives you a protected, controlled right of way; a flashing yellow gives you an unprotected passage where you must actively watch for conflicts. The key distinction the correct answer captures is that a flashing yellow requires reduced speed and heightened alertness even though no stop is mandated.
The bigger picture
Flashing signals exist to keep traffic moving safely when full signal cycling is unnecessary or when equipment is being reset. The safe habit is simple: red = stop, yellow = caution. Whenever a signal is flashing, cover your brake, cut your speed, and be prepared to yield — the driver who assumes the other person will stop is the one who ends up in a crash.
| Flashing yellow | Caution — proceed if clear | No | Slow down, stay alert, yield if needed |
| Flashing red | Same as a STOP sign | Yes — full stop | Stop, yield to cross traffic, then go |
| Solid yellow | Light about to turn red | Stop if safe | Prepare to stop; don't speed up |
| Flashing yellow arrow | Left turn permitted | No | Yield to oncoming traffic, then turn |
Frequently asked
What is the difference between a flashing yellow and a flashing red light?
A flashing yellow means proceed with caution — slow down and stay alert, but no stop is required. A flashing red means the same as a stop sign — you must come to a complete stop and yield before continuing. Yellow is a warning; red is a mandatory stop.
Do you have to stop at a flashing yellow light?
No. You do not have to stop at a flashing yellow light. You must slow down, watch for cross traffic and pedestrians, and be ready to yield, but you may continue through the intersection without stopping once you confirm it is safe.
What does a flashing yellow arrow mean?
A flashing yellow arrow appears on left-turn lanes and means you may turn left after yielding to oncoming traffic and to pedestrians in the crosswalk. The turn is allowed but unprotected, so oncoming vehicles have the right of way.
Who has the right of way at a flashing yellow light?
The driver facing the flashing yellow generally has the right of way, because the cross street usually faces a flashing red and must stop. Even so, the flashing-yellow driver must slow down and yield to anyone already in the intersection.