What does a buffer space do in a work zone?

A buffer space in a work zone is designed to create a physical barrier between road users, such as vehicles and pedestrians, and the actual work area. This space helps ensure the safety of both the workers on the site and the traveling public by providing a clear separation that reduces the risk of accidents. By maintaining this distance, the buffer space allows for better visibility and reaction time for road users as they approach the work zone, enabling them to adjust their speed or change lanes as necessary.

While the other options may have relevance in a broader context of work zone management, they do not accurately describe the primary function of a buffer space. For instance, marking ends of the work area, guiding traffic to alternate routes, and providing signage for detours involve different components of traffic management and do not focus on the crucial separation and safety that a buffer space provides. Thus, the correct understanding of a buffer space is fundamental to promoting safety in work zones.