History
Kakio Station opened on 1 April 1927 on Odakyu Electric Railway's Odawara Line, 23.4 km from the Shinjuku terminus, in what is now Asao-ku, Kawasaki. It became a Semi-Express stop in 1947 and gained Sakura Semi-Express service the following year. A Rush-Hour Semi-Express designation followed in 1960, and use of the trunk-line through routing was discontinued in 1977. In 2004 the station was redesignated a Section Semi-Express stop, reflecting the line's evolving service hierarchy. Station numbering came to the Odawara Line in January 2014, with Kakio assigned OH24. The platform layout consists of two opposed side platforms serving the line's two through tracks.
History summarized from Japanese & English Wikipedia · last reviewed 2026-05-18.
Notes
Kakio's stopping pattern shifted through five named express tiers (Semi-Express, Sakura Semi-Express, Rush-Hour Semi-Express, trunk-line, and Section Semi-Express) between 1947 and 2004 — an unusually well-documented case study in how Odakyu's express categories evolved.