What is the name of the entry area for vehicles or personnel where one door must close before the other opens?

What is the name of the entry area for vehicles or personnel where one door must close before the other opens?

• A. Sally Port
• B. Security Vestibule
• C. Gateway
• D. Vehicle Checkpoint

Answer: (A)

This is about a controlled entryway with an interlock system. A sally port is a secure buffer between the outside and inside of a facility, designed so that one door must close before the other can open. This sequencing creates a moment where neither the exterior nor interior area is open to the other, preventing unauthorized access, tailgating, or escape while a vehicle or person is passing through. It also allows security checks, verification, and surveillance to occur in a controlled space before passage is permitted. Other terms like security vestibule describe a general two-door entrance but don’t emphasize the interlock sequence; a gateway is a broader term for any entrance, and a vehicle checkpoint focuses more on inspection than the door interlock mechanism.

This is about a controlled entryway with an interlock system. A sally port is a secure buffer between the outside and inside of a facility, designed so that one door must close before the other can open. This sequencing creates a moment where neither the exterior nor interior area is open to the other, preventing unauthorized access, tailgating, or escape while a vehicle or person is passing through. It also allows security checks, verification, and surveillance to occur in a controlled space before passage is permitted. Other terms like security vestibule describe a general two-door entrance but don’t emphasize the interlock sequence; a gateway is a broader term for any entrance, and a vehicle checkpoint focuses more on inspection than the door interlock mechanism.