The crash rated gates are powered by either electro-mechanical or hydraulic systems. Typical drive speeds are 60 ft (18.3 m) per minute, depending on electrical supply and gate length. Supplied Delta controls meet all requirements for control and safety. Standard gate measurements are 108 inches (2.74m) from the road surface to the top of the gate frame and 144 inches (3.65m) in length. Clear openings of up to 30 feet (10 m) can be specified.