Which of the following best describes the immediate actions during a vehicle fire on an expressway?

Blocking a minimal number of lanes for safety is the best choice during an immediate response to a vehicle fire on an expressway. This approach allows firefighters to manage the emergency situation effectively while minimizing disruption to traffic flow. By only closing the necessary lanes, responders can create a safe perimeter around the incident, allowing them to work efficiently without causing a complete halt in traffic. This strategy also helps reduce the risk of secondary accidents caused by sudden lane closures or traffic jams.

Taking such measures is important for ensuring the safety of both the emergency personnel and motorists. Firefighters need to maintain access to the vehicle fire while allowing vehicles to move through unaffected lanes. This balance helps manage the incident while keeping the main thoroughfare as operational as possible.

The other responses may not be ideal as they either unnecessarily clog traffic or delay critical actions required during an emergency.