A boom barrier, also known as a boom gate, is a bar or pole that is pivoted to allow or block access to an area. These barriers are often used in parking lots, toll booths, railway crossings, and other restricted areas to control the flow of vehicles. They can be manually operated or automated with sensors or remote-control systems. Boom barriers are an effective means of managing traffic and ensuring security in various settings. https://www.novusapl.com/electronic-boom-barrier.php