The gatehouse serves as the central control center for the ECF by providing shelter for security personnel and controls for the vehicle barriers, traffic control devices, access controls, lighting, and surveillance equipment. Parking for security personnel should be provided near the gatehouse. A separate space for a chase vehicle should also be provided, typically located in parallel with the gatehouse on the response zone side. Gatehouse placement varies by service. They are either placed adjacent to the ID check area for operational reasons or placed after the vehicle turnaround to oversee rejected vehicles.