What should you do if you cannot move over safely for an emergency vehicle on a multi-lane roadway?

Answer: B — Slow down to a speed of 20 mph below the posted speed limit

If you cannot move over safely for an emergency vehicle on a multi-lane roadway, the appropriate response is to slow down to a speed of 20 mph below the posted speed limit. This action helps ensure the safety of both the emergency responders and other road users while still allowing the emergency vehicle to navigate through traffic. By reducing your speed, you create a safer environment for the emergency personnel as they work, and other drivers are likely to notice the emergency vehicle more easily. It's important to be cautious, as stopping suddenly in your lane could cause confusion or accidents, and speeding up to pass is dangerous and could obstruct the emergency vehicle's path. Moving into the closest lane is only advisable if it's safe to do so without causing risk to yourself or others.