What is the purpose of Security Identification Display Areas (SIDA) at airports?

The purpose of Security Identification Display Areas (SIDA) at airports is to provide areas of limited access that require a specific badge or credential for entry. This is crucial for ensuring the security of sensitive areas within the airport, such as those that are close to aircraft, baggage handling, and other operational spots where unauthorized access could pose a threat to safety and security.

By restricting access to these areas through the use of identification badges, airports can effectively manage who is allowed into these sensitive zones, thereby enhancing overall security measures. Those who enter a SIDA are typically employees or authorized personnel who have undergone background checks and have received the necessary training to ensure they understand security protocols.

Other options, while they may relate to airport operations, do not accurately describe the function of SIDA. For example, navigation during low visibility is generally managed through air traffic control and pilot instruments, not SIDA. Similarly, the location of emergency exits and first-aid stations, and the outlining of routes for delivery vehicles, do not pertain to the access control and security measures enforced by SIDA.