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Boom gate or barrier gate systems use a bar to block vehicle traffic. Typically the tip of the barrier arm rises to allow entry or exit access. From airports to office buildings,and parking ramps barrier gates efficiently manage vehicle traffic.

A turnstile (also called a turnpike, gateline, baffle gate, automated gate, turn gate in some regions) is a form of gate which allows one person to pass at a time. A turnstile can be configured to enforce one-way human traffic.

The Traffic Gate. ... They are ideal for controlling traffic direction as well as speed through a controlled entry or exit point. They are also usefull for preventing unwarranted traffic from entering private parking areas and other restricted parking lots.

How does the car park barrier system works? In the car park barrier system the barriers are installed at the entry and exit points of the car park. ... There will also be traffic flow and the cars will move out of control and thus giving you an unorganised and messy parking which won't be secure.

There are seven basic logic gates: AND, OR, XOR, NOT, NAND, NOR, and XNOR. The AND gate is so named because, if 0 is called "false" and 1 is called "true," the gate acts in the same way as the logical "and" operator. The following illustration and table show the circuit symbol and logic combinations for an AND gate.

For today's modern security gate usage, there are five gate designs that are commonly used: Slide Gates, Swing Gates, Vertical Lift Gates, Vertical Pivot Gates, and Bi-Folding Gates.Feb 7, 2019

A barrier is something such as a fence or wall that is put in place to prevent people from moving easily from one area to another. ... A barrier is an object or layer that physically prevents something from moving from one place to another.

Traffic barriers (sometimes called Armco barriers, also known in North America as guardrails or guard rails and in Britain as crash barriers) keep vehicles within their roadway and prevent them from colliding with dangerous obstacles such as boulders, sign supports, trees, bridge abutments, buildings, walls, and large ...

• Barrier Gate Operators. Barrier Gate Operators are generally used in commercial and industrial applications such as controlling access to parking lots and garages in large business complexes, airports and public facilities. These units can be operated automatically by card reader, keypad, telephone entry system,...