Final answer:
When an emergency vehicle with lights and/or siren is approaching, you should pull over to the right and stop to clear the way for the vehicle. Do not remain stationary unless necessary for safety while pulling over. Resume driving safely after the vehicle passes.
Step-by-step explanation:
When an emergency vehicle with lights and/or siren is approaching from behind, the correct response is to safely and quickly pull over to the right side of the road and come to a complete stop, making sure to clear the way for the emergency vehicle. This action should be taken regardless of whether you hear the change in the frequency of the siren caused by the Doppler effect. Once the emergency vehicle has passed, you can resume driving after checking that the way is clear and it is safe to merge back into traffic.
- If you are driving and hear the ambulance siren, you should not become stationary unless pulling over requires you to stop before you can safely resume driving.
- On encountering a red traffic light with an emergency in the vehicle, every action should still prioritize safety, and one should carefully proceed if legally permissible and there is no imminent risk.