Statutory of Organization for Taiwan Railroad Administration Bureau, Ministry of Transportation and Communications Article 17

The Bureau can undertake projects entrusted by the public or private sector related to railroad transportation safety, and architecture, civil engineering, machinery, electricity, railroad trains, and information processing related to operations on the condition that the core business shall not be affected.
中文原文 交通部臺灣鐵路管理局組織條例第17條
本局各單位在不影響本身業務之原則下,得承辦公私機構委請代辦與鐵路行車安全及營運有關建築、土木、機械、電氣、鐵路車輛、電子資料處理等工程。

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