Regulations Governing Water Recreation Activities Article 11
The term "personal watercraft activity" means activity using a vehicle consisting of a suitably modified vehicle body that can be driven by means of balancing and the operation of a steering device, that can be returned repeatedly to an upright position and driven after overturning, that is propelled by a jet pump and driven by an internal combustion engine, and with the lower side of its upper deck measuring not more than four meters in length from the front end to the back end.
中文原文 水域遊憩活動管理辦法第11條
所稱水上摩托車活動，指以能利用適當調整車體之平衡及操作方向器而進行駕駛，並可反復橫倒後再扶正駕駛，主推進裝置為噴射幫浦，使用內燃機驅動，上甲板下側車首前側至車尾外板後側之長度在四公尺以內之器具之活動。