Japan National Route 15
National Route 15 is a national highway connecting Tokyo and Yokohama in Japan. It is commonly referred to as Dai-Ichi Keihin.
Route data
- Length: 29.2 km
- Origin: Nihonbashi, Chūō, Tokyo
- Terminus: Yokohama
- Major cities: Kawasaki
History
- 4 December 1952 – First Class National Highway 15
- 1 April 1965 – General National Highway 15