Touge (峠 tōge?) is a Japanese word literally meaning "pass." It refers to a mountain pass or any of the narrow, winding roads that can be found in and around the mountains of Japan and other geographically similar areas.
Placing a series of turns or bends in the steep roads that provide access to and from the high elevations of the mountains was intended to be a safety measure, usually to prevent commuters from reaching unstable speeds or creating excessive wear on the vehicles associated with them. It is therefore ironic that these same passes have become popular with street racers and motorsports enthusiasts in the last two decades, providing a dangerous and therefore challenging course where nightly competitions aren't unheard of.