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  2. Bar gate - Wikipedia

    en.wikipedia.org/wiki/Bar_gate

    Manual gates are sometimes hung in the manner of a normal gate (i.e. hinged horizontally). In some places, bar gates are installed across suburban streets as a traffic calming measure, preventing through traffic, while allowing authorised vehicles such as emergency services and buses to take advantage of the shorter and more direct route.

  3. Swing bridge - Wikipedia

    en.wikipedia.org/wiki/Swing_bridge

    A swing bridge (or swing span bridge) is a movable bridge that can be rotated horizontally around a vertical axis. It has as its primary structural support a vertical locating pin and support ring, usually at or near to its center of gravity, about which the swing span (turning span) can then pivot horizontally as shown in the animated illustration to the right.

  4. List of cars with non-standard door designs - Wikipedia

    en.wikipedia.org/wiki/List_of_cars_with_non...

    This is a list of cars with non-standard door designs, sorted by door type.These car models use passenger door designs other than the standard design, which is hinged at the front edge of the door, and swings away from the car horizontally and towards the front of the car.

  5. Garage door - Wikipedia

    en.wikipedia.org/wiki/Garage_door

    A typical single-car garage roller door has a preloaded spring inside the rolling mechanism. The spring reduces the effort required to open the door. Oversized roller doors in commercial premises are not sprung (except in the US), and a manual pulley and chain system or a geared motor is used to raise and lower (roll up and roll down) the door.

  6. Posey and Webster Street Tubes - Wikipedia

    en.wikipedia.org/wiki/Posey_and_Webster_Street_Tubes

    [2] [3] [4] A second crossing was added in 1873 as the Alice Street swing bridge, [5] built for Central Pacific (later Southern Pacific) rail traffic. Both the Webster and Alice bridges were replaced by new swing bridges completed in 1900 and 1898, respectively. The Alice bridge was replaced by the Harrison Street bridge, one block west. [6]

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