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LUCK CP  WRIGHT PG 《Nature》1959,183(4675):1595-1596
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Development of City Transport System and Two-wheel Vehicles   总被引:1,自引:0,他引:1  
Based on the study on the city transport systems of some typical cities worldwide, this paper put forward that each city transport system has its own development mode, which is influenced by the city development plan, economic development level, traveling vehicle composition etc.. When some problems occur, such as the congestions caused by contradiction between the road capacity and vehicle composition, the city transport system may come into temporary maturity period. If the improvement for road system is limited meanwhile, optimized structure of vehicle composition should be an effective solution in this case. With the development of economy-internationalization, the development speed of city transport modernization is rapid. When traveling easiness is conflicting with efficiency, the advantages of public transport system become more obvious. Correspondingly, the superiority of two-wheel vehicles will reappear. Though the important function of two-wheel vehicles for alleviating city traffic problems i  相似文献   
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KARPLUS S  WRIGHT WD 《Nature》1947,160(4071):647
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WRIGHT ST 《Nature》1959,183(4670):1282-1283
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