What is the purpose of restricted areas in airspace?

The purpose of restricted areas in airspace primarily revolves around managing safety issues related to unusual hazards that could be detrimental to aircraft operations. These can include various risks such as military operations, live-fire exercises, or other hazardous activities that necessitate restrictions on aircraft movement to ensure safety.

By designating these areas, the responsible authorities can effectively control and limit access for aircraft that are not authorized to enter these zones, thereby mitigating the potential dangers posed by the operations within them. This approach enhances the overall safety of the airspace by ensuring that pilots and their passengers are not inadvertently exposed to threats due to aforementioned activities.

While other options mention the separation of different types of flights or enforcing no-fly zones for safety, the more direct focus of restricted areas is indeed to acknowledge and manage specific unusual hazards that could pose risks to air traffic.