What is the primary use of a spike strip in security?

The primary use of a spike strip in security is to prevent vehicles from entering a parking facility. Spike strips are designed to puncture tires when a vehicle drives over them, effectively immobilizing vehicles that attempt to breach restricted areas or access certain locations unlawfully. This makes them a critical tool in managing access control and enhancing the security of premises, particularly in environments where unauthorized vehicle entry poses a risk.

The other choices, while potentially relevant to aspects of security or parking management, do not align with the specific function of a spike strip. Unlike decorative features that might enhance aesthetic appeal or markers that designate parking spaces, a spike strip's sole and serious purpose is to act as a physical barrier to unauthorized vehicular access. Additionally, the function of signaling security personnel falls under different tools or systems used in security management that focus on communication rather than physical barrier control.