The railway vehicle housing the contents of which are advertisements is invented, but the present urban track bus trolley and the present subway train are not included.

发明内容有广告的轨道车辆外壳，但不包括现有的城市有轨公交电车、现有的地下铁道列车。

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This paper describes line characteristic of urban railway with mathematics methods, with the same interval time of train running as target function to make mathematics model of urban railway.

阐述了匈牙利法的基本思想和基本原理，并与铁路列车运行实际情况相结合，根据铁路列车乘务组分派的基本特点建立数学模型，并用匈牙利法对其进行求解。

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