Japan Association of Rolling Stock Industries Standards (JRIS)
The Japan Association of Rolling Stock Industries Standards (JRIS) are organization standards (industry standards) on railway rolling stock published by the Japan Association of Rolling Stock Industries (JARI). These standards are consists of product standards, test standards, and design standards on on-board devices and their component parts.
JRIS assume a role in complimenting JIS on rolling stock. Some standards are mentioned as references in the Ministerial Ordinance to Provide the Technical Standard on Railway, which established by the Ministry of Land, Infrastructure and Transport (MLIT).
See also JARI web site: http://www.tetsushako.or.jp/english/