A big street that runs east to west in the northern part of the capital (Rakuchu) following the 'Jobosei' (street plan of ancient capital) used in Chinese, Korean, and Japanese cities with the castle of the king.
中国・朝鮮・日本の王城都市で用いられた都市プラン「条坊制」において、都（洛中）の北辺を東西に通る大通り（大路）のこと。