If the sally port is used primarily for vehicles, what design feature ensures containment of the largest vehicle?

If the sally port is used primarily for vehicles, what design feature ensures containment of the largest vehicle?

• A. The gates should be kept open to facilitate quick access.
• B. Only pedestrians are allowed through the port.
• C. One gate should remain unlocked during operation.
• D. The largest vehicle entering can be contained within the sally port with both gates closed.

Answer: (D)

The key idea is that a sally port for vehicles must form a secure, enclosed space to prevent movement in or out once a vehicle is inside. The best design feature is having both gates closed during operation, which creates a contained area that can accommodate even the largest vehicle. When both gates are closed, the enclosure acts as a barrier, preventing the vehicle from escaping or being accessed from an outside area until authorization is granted. Keeping gates open would defeat containment and security. Allowing only pedestrians excludes vehicles entirely, which isn’t practical for a sally port used for vehicles. Having one gate left unlocked also breaks the sealed barrier, compromising containment and safety. Thus, the ability to contain the largest vehicle by closing both gates is the correct design feature.

The key idea is that a sally port for vehicles must form a secure, enclosed space to prevent movement in or out once a vehicle is inside. The best design feature is having both gates closed during operation, which creates a contained area that can accommodate even the largest vehicle. When both gates are closed, the enclosure acts as a barrier, preventing the vehicle from escaping or being accessed from an outside area until authorization is granted.

Keeping gates open would defeat containment and security. Allowing only pedestrians excludes vehicles entirely, which isn’t practical for a sally port used for vehicles. Having one gate left unlocked also breaks the sealed barrier, compromising containment and safety. Thus, the ability to contain the largest vehicle by closing both gates is the correct design feature.