State Library of NSW
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Typically, 30 to 50 percent of the land area of cities consists of car and truck infrastructure. Despite that, traffic congestion remains a problem. Many plans have been put forward to ease the problem in Sydney, including the removal of trams; construction of a road tunnel under King's Cross; an eastern suburbs railway; and construction of highways to allow Harbour Bridge traffic to bypass the city to east and west. Despite the achievement of all those ideals, it would seem that traffic simply expands to fill the space available.