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The cat's eye design originated in the UK in 1934 and is today used all over the world. [1] The original form consisted of two pairs of retroreflectors set into a white rubber dome, mounted in a cast iron housing. This is the kind that marks the centre of the road, with one pair of cat's eyes showing in each direction.
Bollards may also be used to enclose car-free zones. Bollards and other street furniture can also be used to control overspill parking onto sidewalks and verges. [11] Bollards can be temporary and portable, such as this traffic control bollard separating the road from the worksite.
As traffic volumes increase and as cities decide to remove or reduce traffic on specific streets of central areas, streets are closed off using bollards or landscaping thus making new, originally unplanned dead ends and producing a new, functional blend of the inherited grid with newer street types.
A driveway (also called drive in UK English) [1] is a private road for local access to one or a small group of structures owned and maintained by an individual or group. Driveways rarely have traffic lights , but some may if they handle heavy traffic, especially those leading to commercial businesses or parks.
A retractable roof is a roof system designed to roll back the roof of a structure so that the interior of the facility is open to the outdoors. [1] Retractable roofs are sometimes referred to as operable roofs or retractable skylights. The term operable skylight, while quite similar, refers to a skylight that opens on a hinge, rather than on a ...
A retractable bridge is a type of moveable bridge in which the deck can be rolled or slid backwards to open a gap while traffic crosses, usually a ship on a waterway. This type is sometimes referred to as a thrust bridge. The bridge is retracted to the right. Borden Avenue Bridge, Long Island City. Retractable bridges date back to medieval times.
Stanchions and velvet rope. A stanchion (/ ˈ s t æ n tʃ ən /) is a sturdy upright fixture that provides support for some other object. [1] It can be a permanent fixture. In nautical terms, the stanchion is the thick and high iron that with others equal or similar is placed vertically on the gunwale, stern and tops.
Albert Bridge is a road bridge over the River Thames connecting Chelsea in Central London on the north bank to Battersea on the south. Designed and built by Rowland Mason Ordish in 1873 as an Ordish–Lefeuvre system modified cable-stayed bridge, it proved to be structurally unsound, so between 1884 and 1887 Sir Joseph Bazalgette incorporated some of the design elements of a suspension bridge.
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