到2022年末，我国高速公路总路程达17.7万公里，接连11年居全球榜首。

  我国高速公路年平均日规划交通量宜在15000辆小客车以上，规划速度每小时80至120千米 。

  即7条首都放射线条东西横线，及区域环线、并行线、联络线条首都放射线全国分布图：

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