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https://www.alighting.cn/news/20200609/169200.html2020/6/9 10:24:23
大兴机场高速自2019年7月1日正式开通以来运行近一年时间，累计通行车流总量达1744万辆。自开通以来，这条高速上的“智慧路灯”已累计节约用电约40万度，综合节能率达30%。
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