National Route 407 (国道407号, Kokudō 407-gō) is a national highway connecting the Ashikaga, Tochigi and Iruma, Saitama in Japan, and spans a total length...

National Route 1 (国道1号, Kokudō Ichi-gō) is a major highway on the island of Honshū in Japan. It connects Chūō, Tokyo in the Kantō region with the city...

National Route 4 (国道4号, Kokudō Yongō) is a major national highway in eastern Honshū, Japan. Measuring 738.5 kilometers long (458.9 mi), it is the longest...

"新突破！城开高速控制性工程吴家梁隧道掘进4000米大关_高速公路". www.sohu.com. Retrieved 2020-10-11. "国道109新线饮马鞍隧道开挖进尺突破4000米！". j.021east.com. Retrieved 2022-05-22. 网易 (2021-09-11)...

National Route 423 (国道423号, Kokudō Yonhyaku ni-jusangō) is a national highway of Japan connecting Kita-ku, Osaka and Kameoka, Kyoto in the Kansai region...

Chiba and Takanezawa, Tochigi, with a total length of 116.9 km (72.64 mi). "一般国道の路線別、都道府県別道路現況" [Road statistics by General National Highway route and prefecture]...

"新突破！城开高速控制性工程吴家梁隧道掘进4000米大关_高速公路". www.sohu.com. Retrieved 2020-10-11. "国道109新线饮马鞍隧道开挖进尺突破4000米！". j.021east.com. Retrieved 2022-05-22. "景文3标项目叶麻尖1#隧道顺利进洞施工"...

prefectures are developing the Nishikanto Road. Japan portal Roads portal "一般国道の路線別、都道府県別道路現況" [Road statistics by General National Highway route and prefecture]...

Takasaki, Gunma in Japan, with a total length of 192.5 km (119.61 mi). "一般国道の路線別、都道府県別道路現況" [Road statistics by General National Highway route and prefecture]...