수도고속도로
The , also known as the KK Expressway, is a short (2 km) untolled expressway in central Tokyo owned and maintained by Tokyo Skyway Company (Tōkyō Kōsoku Dōro K.K.). It runs in a semicircular loop around the Ginza district of Chūō-ku. The loop is closed by part of the Shuto Expressway Inner Circular Route.