June 10, 2003: The car named 'Mobile Phone Power Source Off Car,' where the passengers are requested to switch off their mobile phones, was experimentally introduced on all trains (for details, please refer to Special Comments).
2003年（平成15年）6月10日携帯電話の電源オフを終日ルールづけた車両「携帯電話電源オフ車両」を全列車で試験的に導入（詳細は特記事項参照）。