This UFC provides the design requirements necessary to plan, design, construct, and maintain vehicle counter-mobility barriers used within Entry Control Facilities (ECF) or as perimeter protection. This UFC is to be used during the design of Department of Defense (DoD) facilities to ensure an optimal vehicle barrier system is selected by engineers and security personnel for a specific operation within an installation. Barrier performance, maintenance, and cost should all be optimized. It is intended to establish consistent requirements, standards, and design basis for barrier planning, design, construction, and maintenance for all military departments. This UFC identifies design features necessary to ensure that infrastructure constructed today will have the flexibility to support future technologies, a changing threat environment, and changes in operations.