Michigan Residential Builders License Practice Test

What does a personal fall arrest system do?

1. It provides a guide for walking on scaffolding

2. It is used for operating machinery safely

3. It protects against falls from heights

4. It serves as a first aid device

The correct answer is: It protects against falls from heights

A personal fall arrest system is designed specifically to protect individuals from falls when they are working at heights. This system typically includes components such as a full body harness, lanyards, and appropriate anchors that are intended to stop a person from falling or to arrest the fall if it should occur. By using this system, workers are kept safe from the potential hazards associated with working on roofs, ladders, or scaffolding, thus significantly reducing the risk of injury or fatality due to falls. The other options do not pertain to the primary function of a personal fall arrest system. For example, guiding for walking on scaffolding, operating machinery safely, or serving as a first aid device do not relate to fall protection and safety measures needed when working at elevation. Instead, they address unrelated aspects of safety and operational procedures.