It introduces the transportation environment evaluation of urban railway from social environment,ecological environment and natural environment. At last,according to comparison analysis of the impact on urban environment,it gives that the urban railway is a excellent way to traffic congestion.%分别从城市社会环境、生态环境和自然环境三个方面阐述了轨道交通对于城市交通环境的影响情况，运用对比的方法得出轨道交通在解决城市道路拥堵问题上是有显著优势的。
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