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Traffic is congested in towns, not so much because roads are narrow as because of the frequency of crossings. These must be eliminated from primary roads. To achieve this, roads can no longer be entirely on ground level. Primary roads may have to be built at high level, as railways were in the 19th century. When this is not possible, "flyover" or "clover-leaf" type crossings must ensure an uninterrupted flow of traffic.
The stationary vehicle offers as big a problem as the moving vehicle. Roads are designed for movement; no standing vehicle must obstruct this movement. Car parks must be built underground if necessary, while every buildng must accommodate on its own site parking space for all vehicles visiting it.
The motorist must be planned for, not regarded as a criminal.
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LIVING IN CITIES
Ralph Tubbs
Member of the Royal Institute of British Architects' Reconstruction Committee
Penguin 1942
Things change, slowly...