What must you do when an emergency vehicle (police, ambulance, civil defence) approaches from behind displaying flashing emergency lights and sounding a siren?

1. Accelerate to match the speed of the emergency vehicle to avoid slowing it down
2. Safely yield the right-of-way by pulling as far to the right as possible and stopping if necessary
3. Stop immediately in your current lane regardless of which lane you occupy
4. Follow closely behind the emergency vehicle to bypass congested traffic