Railway Act Article 14

Where railways and roadways intersect, three-dimensional crossings or railway-crossings shall be installed according to the volume of traffic.The measures of planning, design, installation, modification, discontinuance, installation standards, expense allocation and other relevant matters of aforementioned three-dimensional crossings’ or railway-crossings’ protective facilities shall be provided by the MOTC.
中文原文 鐵路法第14條
鐵路與道路相交處,應視通過交通量之多寡,設置立體交叉或平交道。
前項鐵路立體交叉與平交道防護設施之規劃、設計、施工、新設、變更、廢除、設置基準、費用分擔及其他應遵行事項之辦法,由交通部定之。

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