A boom barrier, also known as a boom gate, is a bar, or pole pivoted to allow the boom to block vehicular access through a controlled point.
Boom gates are often counterweighted, so the pole is easily tipped. Boom gates are often paired either end to end, or offset appropriately to block traffic in both directions.
Some boom gates also have a second arm which hangs 300 to 400 mm below the upper arm when lowered, to increase approach visibility, and which hangs on links so it lies flat with the main boom as the barrier is raised.
Some barriers also feature a pivot roughly half way, where as the barrier is raised, the outermost half remains horizontal, with the barrier resembling an upside-down L when raised.
Automatic boom barriers are used to control vehicular movement on places where access control is required to ensure that only authorized personnel can access the premises. An aluminum Bar rises in vertical arc to allow movement of vehicles.
It is Suitable for parking area at airport, shopping mall, warehouse, hotel, factories, and condominium. It can also be customized to be used together with pay ticketing parking or access control system.