Boom Gate

A boom barrier, also known as a boom gate,[1] is a bar, or pole pivoted to allow the boom to block vehicular or pedestrian access through a controlled point.[2] Typically, the tip of a boom gate rises in a vertical arc to a near vertical position. Boom gates, especially manually operated ones, are often counterweighted,[3] so the pole is easily tipped. Boom gates are often paired either end to end, or offset appropriately to block traffic in both directions.