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长沙市轨道交通1～4号线的线网规划已通过了审批,目前1号线进入了初步设计阶段,计划2015年开通;2号线进入了工程施工阶段,计划2013年底开通。目前信号系统正在进行召标前的
The planning of the line network of Changsha Metro Line 1 to Line 4 has passed the examination and approval. At present Line 1 has entered the preliminary design stage and is scheduled to be opened in 2015; Line 2 has entered the construction phase and is scheduled to be launched by the end of 2013. At present, the signal system is undergoing calling