Japan National Route 15

National Route 15 (国道15号) is a national highway connecting Tokyo and Yokohama in Japan. It is commonly referred to as Dai-Ichi Keihin (第一京浜).

Route data

 * Length: 29.2 km (18.1 mi)
 * Origin: Nihonbashi, Chūō, Tokyo (originates at junction with Route 1, Route 4, Route 6, Route 14, Route 17 and Route 20)
 * Terminus: Yokohama (ends at Junction with Route 1)
 * Major cities: Kawasaki

History

 * 4 December 1952 – First Class National Highway 15 (from Tokyo to Yokohama)
 * 1 April 1965 – General National Highway 15 (from Tokyo to Yokohama)

Municipalities passed through

 * Tokyo
 * Chūō – Minato – Shinagawa – Ōta
 * Kanagawa Prefecture
 * Kawasaki (Kawasaki-ku, Kanagawa) – Yokohama (Tsurumi – Kanagawa)

Intersects with

 * Tokyo
 * Routes 1, 4, 6, 14, 17 and 20 at the origin
 * Route 130 at Minato-ku
 * Yashio Bypass, Route 357 at Shinagawa-ku
 * Route 131 at Ōta-ku
 * Kanagawa Prefecture
 * Routes 132 and 409 at Kawasaki-ku, Kawasaki
 * Route 1, at the terminus