Asian Highway 1 is the longest east–west route of the Asian Highway Network, running 20,557 km from Tokyo, Japan via the Korean Peninsula, China, Mainland Southeast Asia, South Asia, and the Iranian P
AH1 at Nihonbashi, Tokyo, the "zero milepost" for measuring highway distances to Tokyo.
Signage along the Gyeongbu Expressway with AH 1 route marker
The Pyongyang-Kaesong Motorway, is a controlled-access highway in North Korea. It connects the capital Pyongyang to the Joint Security Area at the Korean Demilitarized Zone via Sariwon and Kaesong. Th