Which of the following systems is responsible for ensuring worker safety at heights?

The correct answer is that personal fall arrest systems or guardrail systems are responsible for ensuring worker safety at heights because both of these systems are designed to prevent falls and protect workers during activities that occur at elevated levels. Personal fall arrest systems include components such as harnesses, lanyards, and anchors that work together to stop a fall should it occur. These systems are particularly effective when workers are engaged in tasks where guardrails might not be feasible, such as on scaffolding or roofs.

Guardrail systems are physical barriers installed around the edges of elevated surfaces. They provide a passive means of fall protection by preventing workers from falling off the edge without requiring active participation from the worker, making them a reliable form of safety in many scenarios.

Utilizing both of these safety measures is important in establishing a comprehensive fall protection strategy. Each has unique advantages and can be used in various situations based on the specific work environment and tasks at hand. This dual approach ensures that workers have multiple levels of protection, which is essential for safety in construction and other industries where work occurs at heights.