A barrier is a temporary obstruction to both vehicular and human traffic. It is temporary in nature because the objective is to ensure security compliance, discipline and smooth flow of traffic. These barriers are used in toll booths, checkpoints, parking facilities, level crossings, entrance to buildings and other public properties. Available in a wide range of choice and functionality, they are found everywhere including public and private properties. Boom barriers are used for guarding restricted entries and flap and tripod barriers are installed to control the movement of human traffic and goods. These barriers are important parts of the security infrastructure of protected places.