What is true about ground vehicles in the security perimeter?

Ground vehicles within the security perimeter are indeed subject to search. This practice is in place to uphold safety and security protocols, especially in sensitive areas such as airports. The necessity for searching these vehicles arises from the need to prevent potential threats, including terrorism or unauthorized access to secure locations. By requiring searches, authorities can ensure that no prohibited items or individuals pose a risk to passengers, staff, or airport operations.

While other options may touch upon aspects related to security and access, they do not accurately reflect the regulations and procedures followed within secure perimeters. For instance, vehicles are not exempt from searches. They must undergo inspection to confirm compliance with safety requirements. Also, the nature of searches is not random but rather based on established security protocols and concerns. Lastly, while vehicular access is controlled and requires authorization, that alone does not exempt vehicles from being searched; all authorized vehicles still fall under the search protocol to maintain overall security integrity.