Final answer:
The question discusses Health and safety systems in place to protect against falls at height, specifically focusing on travel restraint systems that prevent reaching an edge and fall restrict systems that offer fall arrest capabilities in combination with work positioning.
Step-by-step explanation:
The question pertains to different systems designed to protect workers from falls at height, which is a subject related to Health and safety in the workplace. Specifically, it discusses travel restraint systems, which prevent a worker from reaching an edge from which they could fall, and fall restrict systems, which combine fall arrest capabilities with work positioning to limit a fall rather than prevent it outright.
Fall arrest systems are designed to stop a worker after a fall has occurred, catching the person and preventing them from hitting the ground or a lower level. They often include components like harnesses, lanyards, lifelines, and anchor points. Contrary to travel restraint systems, fall arrest systems are meant to engage actively during a fall incident.