与此同时,冀京两地普通干线公路建设也快速推进。到2015年,河北与北京对接干线公路由18条增加到36条。到2020年底,河北环北京周边所有县(市、区)与北京实现干线出口路由一级公路对接。
北京是我国西北部地区物资出海,东北地区与中南、西南部地区物资交流的重要枢纽之一,且河北南部与东部和北部联系均需穿过北京。数量庞大的过境车辆已经对北京造成一定城市空气污染和巨大交通压力。业内人士认为,北京大外环高速公路建设将有效解决上述问题。以密涿高速公路为例,经过平谷、三河、香河、廊坊、固安等多地。因为呈“C”形包围北京城区,所以也被称为北京七环路。该项目建成后,将沟通京沈、京台、大广等多条高速公路,北京市东南部现有的过境交通,尤其是货运过境交通将逐渐转移至北京外围地区。
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