国こく土ど開かい発はつ幹かん線せん自じ動どう車しゃ道どう

noun

national development arterial expressway

A formal legal term used in Japanese road law to designate the network of high-standard expressways planned and developed by the national government.

• 国こく土ど開かい発はつ幹かん線せん自じ動どう車しゃ道どうは、全ぜん国こく的てきな高こう速そく道どう路ろ網もうの基き幹かんをなす。

  The national development arterial expressway forms the backbone of the nationwide expressway network.