Boom gates are often counterweighted, so the pole is easily tipped. Boom gates have 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, whereas the barrier is raised, the outermost half remains horizontal, with the barrier resembling an upside-down L when raised.Now, a day 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. This electro-mechanical device comes with a 24VDC drive unit which can run continuously without generating heat, so electro-mechanical boom barriers can be operated continuously and in an intensive duty cycle.

Boom gates are often counterweighted, so the pole is easily tipped. Boom gates have 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, whereas the barrier is raised, the outermost half remains horizontal, with the barrier resembling an upside-down L when raised.Now, a day 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. This electro-mechanical device comes with a 24VDC drive unit which can run continuously without generating heat, so electro-mechanical boom barriers can be operated continuously and in an intensive duty cycle.