What is the function of a "seatbelt cutter" in vehicle rescue?

The function of a "seatbelt cutter" in vehicle rescue is primarily to free trapped passengers by cutting seatbelts. In emergency situations, especially after a collision, passengers may be restrained in their seats by seatbelts, which can hinder extrication efforts. A seatbelt cutter is a specialized tool designed to quickly and safely sever seatbelts, allowing rescuers to access and assist injured individuals more efficiently. This is crucial because every second counts in a rescue scenario, and removing such restraints can prevent further injury and facilitate a prompt evacuation of the occupant, especially if there is a risk of fire or additional hazards.

The other choices don't align with the primary use of a seatbelt cutter. Tools for securing loose items or assisting in lifting vehicles have distinct purposes unrelated to the immediate task of extricating trapped individuals, and monitoring vital signs falls under medical assessment rather than rescue equipment. Understanding the specific tools and their intended functions is invaluable in ensuring effective and safe vehicle rescue operations.