Which of the following is NOT a main fall protection system?

The worksite communication system is not classified as a main fall protection system. Fall protection systems are specifically designed to prevent falls from heights during construction activities. These systems include guardrails, personal fall arrest systems, and safety nets, all of which provide physical barriers or mechanisms to either prevent falls or safely catch individuals if they do fall.

A guardrail system serves as a barrier at the edge of a working surface, safeguarding workers from falling off elevated areas. A personal fall arrest system involves the use of harnesses and lanyards that are attached to a secure anchor point to stop a fall before a worker makes contact with the ground. The safety net system is designed to catch workers who fall and minimize the impact of that fall.

In contrast, a worksite communication system focuses on facilitating effective communication among team members, ensuring that safety protocols and hazards are communicated clearly. While effective communication is essential for safety, it does not directly prevent falls or provide protection in the event of a fall, which is why it is not identified as a main fall protection system.