A boom barrier, also known as a boom gate, is a bar, or pole pivoted to allow the boom to block vehicular or pedestrian access through a controlled point.[1] Typically the tip of a boom gate rises in a vertical arc to a near vertical position. 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 barrier There are various technologies for an automatic boom barrier. One of them is electro-mechanical, which is widely used due to its reliability. The other technologies are often manufacturer specific. These electro-mechanical devices come with 24-volt direct-current drive units which can run continuously without generating heat, so electro-mechanical boom barriers can be operated continuously and in an intensive duty cycle..
There are many types of Features & benefit
There are many types of Boom Barrier
They are commonly seen at parking areas. It enables them to restrict vehicular access until the owners of those vehicles pay a fee. They are required to present the tickets that they had received after paying the fee before leaving the area in order to make the boom gates rise to exit. They are present in restricted areas. Here the drivers must present an ID, swipe an access card etc. to get the gates open. They are very useful for traffic calming. Such as, preventing thorough traffic to access a street to allow an ambulance to pass through. This enables emergency services to reach needy people more quickly..