After the Taika Reforms, with the enactment of the Ritsuryo system aiming to govern all of Japan under the unified standard, traffic routes connecting each district were improved for governing and collecting taxes smoothly.
大化の改新以降、日本全土を統一した基準で治めるために律令制が制定され、各地の統治や租税の徴収を円滑に行うために各地を結ぶ交通路が整備された。