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交通运输业与国民经济之间存在着“推拉效应”。可以通过建立数学模型来具体地测算其推动效应和拉动效应值的大小，当推动效应大于拉动效应时，运输需求大于运输供给；当推动效应等于拉动效应时，运输供求平衡；当推动效应小于拉动效应时，运输需求小于运输供给。
交通运输与国民经济供求关系的判定方法——“推拉效应”法
【摘 要】
：
交通运输业与国民经济之间存在着“推拉效应”。可以通过建立数学模型来具体地测算其推动效应和拉动效应值的大小，当推动效应大于拉动效应时，运输需求大于运输供给；当推动效应等
【出 处】
：
武汉交通管理干部学院学报
【发表日期】
：
1999年3期
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