California's Move Over law requires:

  1. All vehicles to stay in the right lane at all times.
  2. Trucks to use the left lane.
  3. All vehicles to vacate the lane closest to an emergency vehicle that is stopped with its lights flashing. ✓

Answer: C. All vehicles to vacate the lane closest to an emergency vehicle that is stopped with its lights flashing.

California's Move Over law requires drivers to vacate the lane closest to an emergency vehicle that is stopped with its lights flashing.

Why this is the answer

The handbook says that when you approach a stationary emergency vehicle with flashing emergency signal lights, you must move over and slow down. That instruction applies to all drivers, not just trucks, and it is about making room near a stopped emergency vehicle. The answer that says all vehicles must vacate the lane closest to that vehicle matches this rule. The handbook also repeats the move-over-and-slow-down duty for emergency and road work vehicles with flashing lights.

Why the other answers are wrong

Remember it

When you see flashing lights on a stopped emergency vehicle, think move over and slow down, not stay put.

Official handbook: California Driver Handbook (DL 600), Section 7: Laws and Rules of the Road, p. 45

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.