When working on roofs, how should access points be connected to the work area?

The correct approach to connecting access points to the work area on roofs is to use an access path formed by two warning lines. This method serves as a visual aid to alert workers about the roof's edge and potential hazards. The warning lines help delineate a safe path, guiding personnel while remaining flexible and easily adjustable as the work progresses.

Using warning lines is crucial for preventing falls, as they highlight areas where caution is required and provide a clear understanding of where the risk of falling exists. It ensures that workers maintain a safe distance from the roof edge while still allowing for necessary movement around the work area.

The other options have specific applications or limitations that may not effectively ensure safety in this context. For example, a solid wall could be impractical on most roofs where walls are not present, and guardrails may not be feasible in certain roofing configurations. Safety nets, while useful in specific scenarios to catch potential falls, do not serve as an immediate guiding mechanism that helps workers navigate safely to their work area.