Moreover, while engineering is in progress, storage area is needed for equipment and materials. In terms of cost too, tunneling cannot take the place of open-cut construction of MRTS stations. To tunnel-dig just one station on Aikwo West Road, would cost an extra 400 million NT. For many reasons, the trees cannot be kept.
而且，工程進行時，還要有地方放置機械、材料；基於經費的考慮，捷運車站也不能以潛盾式工程代替明挖，光一個愛國西路車站改為潛盾，就必須多花四億新台幣，諸多理由加起來，反正就是此處不留「樹」。