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  2. Bar gate - Wikipedia

    en.wikipedia.org/wiki/Bar_gate

    This underbar typically hangs on links, so it lies flat with the main bar as the barrier is raised. Some barriers also feature a pivot roughly half way, where as the barrier is raised, the outermost half remains horizontal, with the barrier resembling an upside-down L (or gamma ) when raised.

  3. Escalator - Wikipedia

    en.wikipedia.org/wiki/Escalator

    The carrying capacity of an escalator system is typically matched to the expected peak traffic demand. For example, escalators at transit stations must be designed to cater for the peak traffic flow discharged from a train, without excessive bunching at the escalator entrance. In this regard, escalators help manage the flow of people.

  4. Central–Mid-Levels escalator - Wikipedia

    en.wikipedia.org/wiki/Central–Mid-Levels_escalator

    The Central–Mid-Levels escalator and walkway system in Hong Kong is the longest outdoor covered escalator system in the world. The system covers over 800 m (2,600 ft) in distance and traverses an elevation of over 135 m (443 ft) from bottom to top. It opened in 1993 to provide an improved link between Central and the Mid-Levels on Hong Kong ...

  5. Optical turnstile - Wikipedia

    en.wikipedia.org/wiki/Optical_turnstile

    In parallel, Automatic Systems and others developed barrier type optical turnstiles (speedgates) for the mass transit industry that were eventually adapted and evolved for Class A commercial real estate and corporate HQ entrance control markets. Today there are many manufacturers, based in North America, Europe, China and around the world.

  6. Tactile paving - Wikipedia

    en.wikipedia.org/wiki/Tactile_paving

    A set of yellow truncated domes on the down-ramp in a parking lot. Tactile paving (also called tenji blocks, truncated domes, detectable warnings, tactile tiles, tactile ground surface indicators, tactile walking surface indicators, or detectable warning surfaces) is a system of textured ground surface indicators found at roadsides (such as at curb cuts), by and on stairs, and on railway ...

  7. Dean Sicking - Wikipedia

    en.wikipedia.org/wiki/Dean_Sicking

    Ultimately, the investigation contributed to the development of Sicking's invention, the SAFER barrier, [7] an energy management system that reduces the impact felt by the driver by flexing and absorbing energy. Prior to the barrier, NASCAR and IndyCar averaged approximately 1.5 driver fatalities

  8. Barrier cable - Wikipedia

    en.wikipedia.org/wiki/Barrier_cable

    Barrier cable is a vehicular or pedestrian restraint system used in parking garages. It installed along the ramps or around the perimeter of the parking structure. It consists of a 0.5-inch, 7-wire steel strand which is similar to the strand used in Post-tensioned concrete.

  9. Four-quadrant gate - Wikipedia

    en.wikipedia.org/wiki/Four-quadrant_gate

    A level crossing with manually-controlled full barriers at Chertsey, England. The barriers are rising. A four-quadrant gate or full-barrier equipment is a type of boom barrier gate protecting a grade crossing. It has a gate mechanism on both sides of the tracks for both directions of automotive traffic.

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