If you approach an emergency vehicle stopped on the right shoulder of an interstate highway with at least two lanes in the same direction:

• Merge into the left lane freeing the right most lane as a safety barrier
  Explanation:

  "If the emergency vehicle is stopped on the right shoulder, the motorist should merge into the left lane of traffic, freeing the right most lane as a safety barrier."
• Merge into the right lane, regardless of the emergency vehicle's location
• Continue driving in the lane closest to the emergency vehicle
• Come to a complete stop