Abstract: A bollard type security barrier apparatus for use in controlling ingress and egress to controlled areas. The apparatus if of simple design, is easily installed and includes a remotely operated positive drive mechanism for raising and lowering the bollard which is telescopically mounted within a sealed casing adapted to be mounted beneath the ground. The drive mechanism and the bollard are readily removable from the subterranean casing for repair or replacement; and, for certain applications, the upper portion of the bollard can be illuminated.