What do the blue signs typically indicate in restricted areas at LAX?

Blue signs in restricted areas at LAX are used specifically to indicate areas that are off-limits to unauthorized persons. These signs serve a crucial role in maintaining security and safety within the airport environment. By clearly marking these restricted zones, they help ensure that only those with the necessary authorization, such as airport personnel and security staff, can access certain areas. This is critical for controlling access to sensitive parts of the airport, such as hangars, security checkpoints, and operational zones, thereby preventing potential security breaches and ensuring the safety of passengers and staff alike. Understanding these indicators is essential for anyone operating within restricted areas at the airport.