What situation does railcar rescue tunneling specifically address?

Railcar rescue tunneling specifically addresses the scenario where railroad cars are stacked on one another. This particular situation presents unique challenges because rescuers need to access individuals trapped in lower railcars that may not have direct access due to the weight and positioning of the cars stacked above them. Tunneling allows rescuers to create a safe passage to reach and extricate victims without risking further collapse or injury.

In this context, tunneling is a crucial technique that helps ensure safety and access during complex rescues in railroad incidents where multiple cars may be involved in a derailment or other emergencies. By focusing on this specific method, rescuers can effectively navigate the difficulties posed by the stacked configuration, prioritizing both the safety of the victims and the rescue team.