采用GIS系统集成技术开发了城市道路交通信息系统。
This paper adopts the integrated technical of GIS system to design and develop the information system of urban traffic accident.
由于城市道路交通问题具有不确定性和不精确性，故采用基于粗糙集的交通信息提取计算理论建立城市道路行程时间预测模型。
Since urban travel times are stochastic and uncertain, a model for addressing urban travel time prediction by using transport information granular computing theory based on rough set was proposed.
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