The image shows one possible farm layout incorporating biosecurity zones. The smaller biosecurity zone, the restricted access zone (RAZ), contains the barn where the production animals are housed, with a transitional area or ante room at the front, and a controlled access point (CAP) at the doorway. The larger biosecurity zone, the controlled access zone (CAZ), encompasses the RAZ along with feed and equipment storage; the CAZ has its own CAP (likely a gate) where the driveway meets the RAZ. The house and the parking area are located outside the CAZ. A neighbour is indicated to the south.