April 1, 1989: As part of the support for the public-relations effort of 'The International Garden and Greenery Exposition, Osaka, Japan, 1990,' the operation of special trains--'Hana-go (flower train),' 'Midori-go (greenery train)' and 'Mizu-go (water train)'--started (and ran till September of the next year).
1989年（平成元年）4月1日「国際花と緑の博覧会」への広報協力として「花号」「緑号」「水号」を運行（翌年9月まで）。