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  2. Bar gate - Wikipedia

    en.wikipedia.org/wiki/Bar_gate

    Bar gate. Animation of level crossing booms lowering in Queensland, Australia. A bar gate in the Netherlands. A bar, post, pole, beam, or boom gate, [1] also known as a boom or a boom barrier, [citation needed] is a beam or bar on a pivot used as a gate. The boom is lowered to block vehicular or pedestrian access through a controlled point or ...

  3. Electronic toll collection - Wikipedia

    en.wikipedia.org/wiki/Electronic_toll_collection

    Electronic toll collection (ETC) is a wireless system to automatically collect the usage fee or toll charged to vehicles using toll roads, HOV lanes, toll bridges, and toll tunnels. [1] It is a faster alternative which is replacing toll booths, where vehicles must stop and the driver manually pays the toll with cash or a card.

  4. Turnstile - Wikipedia

    en.wikipedia.org/wiki/Turnstile

    Turnstile. A turnstile (also called a 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. In addition, a turnstile can restrict passage only to people who insert a coin, ticket, transit pass, security ...

  5. Electric gate - Wikipedia

    en.wikipedia.org/wiki/Electric_gate

    A sliding electric gate with electric motor and backup battery in case of mains failure. Note also the Infrared obstacle sensor located on the wall to prevent the gate from closing while a vehicle or other obstacle is in the way. Driveway gate openers can be the rollback (sliding) type that retracks a gate along the fence or wall on wheels or ...

  6. Tainter gate - Wikipedia

    en.wikipedia.org/wiki/Tainter_gate

    Tainter gate being constructed, in 1936, on the upper Mississippi River, Lock and Dam No. 7 (Onalaska Dam), La Crescent, Minnesota (USACE) Stevenson Dam Tainter Gate on the Housatonic River in Connecticut. The Tainter gate is a type of radial arm floodgate used in dams and canal locks to control water flow.

  7. Wastegate - Wikipedia

    en.wikipedia.org/wiki/Wastegate

    Wastegate. A wastegate is a valve that controls the flow of exhaust gases to the turbine wheel in a turbocharged engine system. [1] Diversion of exhaust gases regulates the turbine speed, which in turn regulates the rotating speed of the compressor. The primary function of the wastegate is to regulate the maximum boost pressure in turbocharger ...

  8. Swing-door operator - Wikipedia

    en.wikipedia.org/wiki/Swing-door_operator

    Types. There are 3 basic types of swing door operators: Full Energy – It opens and closes the door at full speed. Low Energy – It opens and closes the door at reduced speed to limit the kinetic energy of the moving door to levels deemed safe for disabled users. Power Assist – This is a version of the low-energy operator.

  9. Level crossing signals - Wikipedia

    en.wikipedia.org/wiki/Level_crossing_signals

    Level crossing signals. Level crossing signals are the electronic warning devices for road vehicles at railroad level crossings. Level crossings can be operated in various ways. In some countries such as the UK, the warning devices are more often than not activated by remote control, I.e. an operator pressing buttons.

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