If the limits of an Out of Service (OOS) track end at a turnout, which safety measure must be implemented?

The correct choice emphasizes the importance of ensuring safety at locations where the limits of an Out of Service (OOS) track end at a turnout. In this scenario, placing a barricade serves as a critical visual and physical barrier that communicates to train crews and maintenance personnel the restricted status of the track. Additionally, the requirement to also remove any adjacent track reinforces the notion that the area is unsafe for operations. This is vital to prevent any accidental incursions into an area that may pose a risk due to maintenance work or other hazards.

This safety measure helps eliminate confusion for those operating or working near the turnout, as it clearly delineates the boundaries of the OOS area. By requiring both a barricade and removal of adjacent tracks, it ensures that the danger is effectively communicated and mitigated, thereby enhancing overall safety in operations near turnouts.