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In 1930, the concept of specific regulation for roads within built-up areas appears. It defines the road as a road within built-up area if some system of street lighting exists at less than 200 yards (183 meters) from that road, unless decided other way by the local authority and written on traffic signs. [1]
According to the definition by the Office for National Statistics, "Built-up areas are defined as land which is 'irreversibly urban in character', meaning that they are characteristic of a town or city. They include areas of built-up land with a minimum of 20 hectares (200,000 m 2; 49 acres). Any areas [separated by] less than 200 metres [of ...
In France, an urban unit (French: unité urbaine) is a statistical area defined by INSEE, the French national statistics office, for the measurement of contiguously built-up areas. According to the INSEE definition , an "unité urbaine" is a commune alone or a grouping of communes which: a) form a single unbroken spread of urban development ...
This is the floor area of buildings divided by the land area. Ratios below 1.5 are low density. Ratios above five constitute very high density. Most exurbs are below two, while most city centres are well above five. Walk-up apartments with basement garages can easily achieve a density of three. Skyscrapers easily achieve densities of thirty or ...
The method is based on the premise that as the built-over area in a given landscape increases (amount of built-up area), and the more dispersed this built-up area becomes (spatial configuration), and the higher the uptake of this built-up area per inhabitant or job increases (utilization intensity in the built-up area), the higher the overall ...
The area is designated by the Office of Management and Budget (OMB) as the Washington–Baltimore–Arlington, DC–MD–VA–WV–PA Combined Statistical Area. It is composed primarily of two major metropolitan statistical areas (MSAs), the Washington–Arlington–Alexandria, DC–VA–MD–WV MSA and the Baltimore–Columbia–Towson ...
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A typical suburban development in the United States, located in Chandler, Arizona An urban development in Palma, Mallorca. Urban sprawl (also known as suburban sprawl or urban encroachment [1]) is defined as "the spreading of urban developments (such as houses, dense multi–family apartments, office buildings and shopping centers) on undeveloped land near a more or less densely populated city".