A steady yellow traffic signal light is a warning that the light is about to change to red. If you are already within the intersection when a green light changes to yellow, you should:

  1. Stop.
  2. Continue moving and clear the intersection safely. ✓
  3. Increase your speed so as not to cause an accident.

Answer: B. Continue moving and clear the intersection safely.

Continue moving and clear the intersection safely.

Why this is the answer

The California handbook says a steady yellow light means caution because the signal is about to turn red. It tells you to stop only if you can do so safely. If you cannot stop safely, you should cautiously cross the intersection. When you are already within the intersection as the light changes, stopping there is not the safe choice; you should keep moving and clear the intersection carefully.

Why the other answers are wrong

Remember it

Yellow asks whether you can stop safely; if you're already in the intersection, clear it carefully instead of freezing there.

Official handbook: California Driver Handbook (DL 600), Section 7: Laws and Rules of the Road, p. 33

Explanation drafted with AI (deepseek-flash) from the official handbook passage cited above, then checked automatically and by a second model on 2026-10-23. Always confirm with the official handbook.