Which type of security feature stops vehicles from crashing through the doors of a building?

A turnstile is a physical access control mechanism designed to regulate pedestrian entry one person at a time, and provides no protection against vehicles.

Bollards are a physical perimeter security control engineered to absorb and deflect vehicle impact, stopping cars or trucks from breaching a building entrance. They are rated by standards such as ASTM F2656 for the level of vehicle impact they can withstand. No other listed control provides this vehicle-stopping physical barrier function.

A mantrap is a small interlocking room or vestibule used to authenticate individuals before granting access to a secure area, offering no vehicle deterrence.

A receptionist provides human-based access control by verifying visitor identity, but has no physical capability to stop a vehicle from crashing through a building.