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从经济分析的角度论述ＯＤ调整在工程可行性中的重要性，从交通量的构成和经济分析的需要对交通量ＯＤ调查的时间进行分析研究，认为进行交通量２４小时ＯＤ调查是十分必要的
From the perspective of economic analysis, the importance of OD adjustment in project feasibility is analyzed. Based on the analysis of traffic volume and the need of economic analysis, the time of OD investigation of traffic volume is analyzed. It is necessary to carry out OD survey of traffic volume for 24 hours