What might be necessary when responding to calls on the highway?

When responding to calls on the highway, blocking traffic and coordinating with law enforcement is critical for several reasons. First, it enhances the safety of emergency responders and the public by preventing other vehicles from inadvertently entering the scene of an incident. This proactive measure significantly reduces the risk of secondary accidents, which are common when emergency vehicles are present on highways.

Coordination with law enforcement is also essential, as they are trained to manage traffic flow and can help establish a secure perimeter around the incident. By working together, emergency responders can ensure that the scene remains controlled and that their response efforts are not hindered by ongoing traffic. This collaboration allows for a more efficient and effective handling of the emergency situation.

The other options do not prioritize safety or effective communication, which is why they are not suitable in this context. Ignoring traffic flow could lead to chaos and increased danger, while proceeding without interruption or waiting for a police escort delays the necessary response actions and could exacerbate the situation.