What kind of fall protection is required when working at heights without proper barriers?

The correct answer is that a travel restraint system is the type of fall protection required when working at heights without proper barriers. A travel restraint system is designed to limit the movement of a worker so that they cannot reach a location from which they could fall. This approach ensures that the worker remains safe and secure while performing tasks at elevation.

In scenarios where there are no guardrails or other barriers to prevent falls, implementing a travel restraint system becomes critical. This system typically involves the use of safety harnesses and lanyards that prevent the worker from getting too close to the edge of a surface, thereby reducing the risk of falling.

This method is particularly important in industries such as telecommunications, where technicians often work on towers or rooftops where heights can be significant. The system's design aims to maintain a worker's stability and safety while allowing them to perform their duties effectively.

Other choices, while related to fall protection, do not directly address the requirement in the context of working without barriers. Netting is more commonly used as a passive fall protection system to catch falling workers, guardrails are physical barriers that prevent falls but are not an option in this scenario, and a full-body harness is an integral part of a fall arrest system, allowing for a controlled descent