Security: 1. Exterior lighting 2. Signs. A sign with the legend “Danger – Unauthorized Personnel Keep Out” msut be posted each entrance to the active portion of a facility. but in no case shall the spacing be greater than 200-foot intervals. Must be legible from a distance of at least 25 feet.

Security: 1. Exterior lighting 2. Signs. A sign with the legend “Danger – Unauthorized Personnel Keep Out” msut be posted each entrance to the active portion of a facility. but in no case shall the spacing be greater than 200-foot intervals. Must be legible from a distance of at least 25 feet.