Police Duty Act Article 14

In the needs of public order, police organizations at every level may assign police officers to mobile squads, utilizing combined force to perform duties of patrol, routine check, and raid in designated areas and accomplish statutory missions such as writing tickets, preventing crimes, and clamping down on illegal activities. Furthermore, the police organizations shall reserve police force for mobile utilization.
中文原文 警察勤務條例第14條
各級勤務機構因治安需要,得指派人員編組機動隊(組),運用組合警力,在指定地區執行巡邏、路檢、臨檢等勤務以達成取締、檢肅、查緝等法定任務;並得保留預備警力,機動使用。

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