The model TCRB-4 pivoting barrier arm is ASTM F2656-07 M30 P1 certified (equivalent to Department of State K4). The unit includes an aluminum arm assembly, hinge stanchion, receiver stanchion, and can be operated either manually (using a counterweight) or by an electro-mechanical or electro-hydraulic power unit. All of the steel components are painted black, and the arm is an aluminum square tube, powder coated white, with DOT approved reflective tape.
The operated variations of the barrier system use the latest technology for controls, including a custom speed control on the electro-hydraulic version. The electro-hydraulically operated system comes standard with built-in soft start and stop control. This advanced control technique allows for faster-operating speeds, yet reduces the mechanical wear from the shock associated with a sudden stop. The electro-hydraulic cabinet is self-contained and can be placed up to 30 feet from the arm.
The electro-mechanical TCRB-4 uses an electric motor, gearbox and chain assembly to operate the arm to the full up and down position. The electro-mechanical unit is self contained and is attached directly to the hinge stanchion.