Aircraft Flight Operation Regulations Article 307

Any traffic alert and collision avoidance system installed in an aircraft must be approved by CAA.Each person operating an aircraft equipped with an operable traffic alert and collision avoidance system as set out in the preceding paragraph shall have that system on and operating.
中文原文 航空器飛航作業管理規則第307條
航空器所裝置之空中防撞系統,應經民航局核准。
前項裝置除有故障情況外,於飛航時應開啟使用。

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