What are physical devices designed to prevent entry into hazardous areas called?

The term that refers to physical devices designed to prevent entry into hazardous areas is "barriers." Barriers are structures that can be utilized to restrict access and protect individuals from potential dangers. They are essential for ensuring safety in environments where there is a risk of injury or exposure to hazardous conditions.

While barricades can also serve a similar purpose, they are often more temporary or specific to certain situations, such as construction sites or events. Fences are primarily designed for perimeter security rather than specifically for protecting against hazardous areas. Signs are important for providing information and warnings but do not physically restrict access. By using barriers, organizations can effectively create safe zones and manage access to hazardous areas, promoting overall workplace safety.