What are switchable retractors known for?

Switchable retractors are known for their flexibility in adjusting to different situations, particularly during a crash. These devices can transition between being loose for comfort during regular driving and locking into place to accommodate a secure fit when a collision occurs. This dual function is essential for safety, as it allows the seatbelt to provide optimal protection by securing the occupant firmly in their seat at the moment of impact. This adaptability is a critical feature that enhances the effectiveness of the vehicle's seatbelt system during unexpected incidents.

In contrast, features like remaining loose while driving can be dangerous as they would not provide the necessary restraint in a crash. Other alternatives mention always being tight or only being available in modern vehicles, which do not accurately reflect the functional design of switchable retractors, as these retractors are designed precisely to adjust to the needs of the user and the circumstances they encounter on the road.