Automtic Traffic Barrier 1, With control box and remote control 2, Arm length: Max ... , Stadium... Automtic Traffic Barrier -- Features: 1, It is widely used for the facilities of parking, traffic or toll ... .3, The arm length is customized (no more than 6m)4, Safety barrier with direct boom, fold boom ... available to open the clutch when power is cut off. 6, With input terminals of toll devices, loop ...