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  2. Bollard - Wikipedia

    en.wikipedia.org/wiki/Bollard

    An illuminated bollard has a recessed base light unit in the foundation to illuminate the traffic bollard from all angles. [15] The main components are housed below the road or pedestrian surface (typically a concrete surface) so that if a vehicle strikes the traffic bollard the parts below the surface are not damaged.

  3. Traffic cone - Wikipedia

    en.wikipedia.org/wiki/Traffic_cone

    In many countries such as Australia and in some American states such as California, traffic barrels are rarely seen; pillar-shaped moveable bollards are instead used where larger and sturdier warning or delineation devices are needed. Typically, bollards are 1,150 mm (45 in) high fluorescent orange posts with reflective sleeve and heavyweight ...

  4. Raised pavement marker - Wikipedia

    en.wikipedia.org/wiki/Raised_pavement_marker

    Delineators are tall pylons (similar to traffic cones or bollards) mounted on the road surface, or along the edge of a road, and are used to channelize traffic. These are a form of raised pavement marker but unlike most such markers, delineators are not supposed to be hit except by out-of-control or drifting vehicles.

  5. Jersey barrier - Wikipedia

    en.wikipedia.org/wiki/Jersey_barrier

    Jersey barriers on the road. A Jersey barrier, Jersey wall, or Jersey bump is a modular concrete or plastic barrier employed to separate lanes of traffic.It is designed to minimize vehicle damage in cases of incidental contact while still preventing vehicle crossovers resulting in a likely head-on collision.

  6. Precast concrete - Wikipedia

    en.wikipedia.org/wiki/Precast_concrete

    Precast concrete is a ... Products include: hand holes, hollow-core products, light ... concrete barriers, TVCBs, central reservation barriers, bollards, and other ...

  7. History of street lighting in the United States - Wikipedia

    en.wikipedia.org/wiki/History_of_street_lighting...

    Although the tower lighting in Detroit provided "uniform carpets of light", it was ineffective in providing sufficient lighting for high-traffic areas and routes. After five years, Detroit began to dismantle its towers. [1] As of October 2021, the only lighting towers that remain in the United States are in Austin, Texas.

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