AbstractsTransportation

It is an obvious and well-known fact among urban dwellers, that the two main physical problems in central areas of cities - traffic congestion and the lack of sun, light and open space - are caused by the overcrowding of land by buildings and an archaic traffic system. In these areas, where high building density prevails, the design and siting of buildings closely controls the amount of natural light which has access to them. Before the advent of elevators, the height of buildings was fairly limited by various practical considerations, such as, the number of flights of stairs which people could reasonably be expected to climb.[...]