title: Japan National Route 15
text: # Japan National Route 15
  
  National Route 15 (国道15号, Kokudō Jūgo-gō) 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
  