The Commercial Port Law Article 35

The personnel and vehicles entering the commercial port control area shall apply to the Commercial Port Administrative Authority, Maritime and Port Bureau or the designated agencies for a pass, and subject to the inspection of the port police.
中文原文 商港法第35條
進入商港管制區內人員及車輛,均應申請商港經營事業機構、航港局或指定機關核發通行證,並接受港務警察之檢查。

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