Final answer:
If you see an emergency vehicle moving into your lane behind you displaying red flashing lights and using a siren, you should pull over to the right side of the road and come to a complete stop.
Step-by-step explanation:
If you see an emergency vehicle moving into your lane behind you displaying red flashing lights and using a siren, you should pull over to the right side of the road and come to a complete stop. This allows the emergency vehicle to pass safely and quickly. It is important to make sure you do not block the emergency vehicle's path.
By stopping and giving way to the emergency vehicle, you are helping to ensure that they can reach their destination promptly and potentially save lives.