On a four-lane highway, what should you do when an emergency vehicle approaches?

When an emergency vehicle approaches on a four-lane highway, the appropriate response is to slow down and yield by changing lanes. This action helps in safely clearing the path for the emergency vehicle while also ensuring the safety of both the driver and other road users. By changing lanes, drivers are providing a clear space for the emergency vehicle to pass, adhering to the law which often mandates that drivers must yield to such vehicles.

This approach minimizes potential hazards and promotes a quick response for emergency services, which can be crucial in critical situations. It's important for drivers to remain attentive and cautious while executing this maneuver, ensuring that it's safe to change lanes without endangering themselves or others.