Question

how must you react to a flashing yellow traffic light?
watch for construction crews.
only stop if you see pedestrians.
stop if you can do so safely.
slow down. stop if needed.

Explanation:

A flashing yellow traffic light indicates that drivers should proceed with caution. The correct action is to reduce speed and stop only if it is necessary to avoid hazards or ensure safety, which aligns with the standard traffic rule for this signal.

Answer:

Slow down. Stop if needed.