Mass Rapid Transit Act Article 30

Technicians who serve in the operation and repair of mass rapid transit system facilities shall have obtained technical qualifications in accordance with the law or regulations.
中文原文 大眾捷運法第30條
大眾捷運系統設施之操作及修護,應由依法經技能檢定合格之技術人員擔任之。

English translation for reference only; the Chinese text prevails. Not legal advice.