Administrative Penalty Act Article 5
In the case of change in law or self-governing ordinance after the commission of the act, the law or self-governing ordinance in force at the time when sanction was therefor imposed shall apply; provided, however, that the provision most favorable to the person punished shall apply if the law or self-governing ordinance in force prior to the imposition of the sanction is more favorable to him.
中文原文 行政罰法第5條
行為後法律或自治條例有變更者，適用裁處時之法律或自治條例。
但裁處前之法律或自治條例有利於受處罰者，適用最有利於受處罰者之規定。
但裁處前之法律或自治條例有利於受處罰者，適用最有利於受處罰者之規定。