What should you do after an emergency vehicle has passed?

• Check if the way is clear, signal, and merge back into traffic while staying alert for additional emergency vehicles
  Explanation:

  "When the emergency vehicle has passed, check to make sure the way is clear and signal before merging back into traffic. Remain vigilant for additional emergency vehicles, and remember it is illegal to follow within 150 meters of a fire vehicle responding to an alarm."
• Immediately speed up and merge without signaling
• Stop and wait for five minutes before merging back
• Merge back quickly without checking for other vehicles