Railway Act Article 61

Besides high-speed railways, public and private construction along both sides of railway routes shall be restricted after railway institutions have consulted and requested the local municipality, county governments to conduct surveys of railway operation viewing distance and the requirements for the electricity supply wires of electrified railway wires. Existing buildings that block railway operation views may be requested, by corresponding authorities, to modify their structure within a time limit, or be demolished.Trees and high-stemmed plants along both sides of railway routes that hinder railway operation safety or electricity supply wires may be cut down or pruned by railway institutions after notifying the owner or occupant. In case of an emergency situation, cutting or pruning before notifying is allowable.The aforementioned modification and demolishment or cutting down and pruning shall be conducted where the least damage will be made or by the least damaging method available. Equivalent compensation shall also be given.
中文原文 鐵路法第61條
高速鐵路以外鐵路沿線兩側之公私有建築物,由鐵路機構商請當地直轄市、縣(市)政府勘定鐵路行車視距及電車線供電線路之需要後限制之。
原有建築物妨礙行車視線者,得商請主管建築機關依法限期修改或拆除。
鐵路沿線兩側樹木及高莖種植物,妨礙鐵路行車安全或供電線路者,鐵路機構得通知所有人或占有人後,砍伐或修剪之。
但情形急迫時,得先行砍伐或修剪後,再行通知。
前二項之修改、拆除、砍伐或修剪,應擇其損害最少之處所或方法為之,並予相當之補償。

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