電動助力車

電動助力車是一種電動自行車，此類自行車可以由小型電動機驅動，但自行車手必須踩腳蹬後電動機才會起作用。而有一類電動自行車，騎車人無需踩踏腳蹬，單純靠電動機就能驅動車輛，這種電動自行車有時會被視為輕便摩托車。電動助力車有一個電子控制器，當騎車人不睬腳蹬或自行車速度達到25 km/h（16 mph）或32 km/h（20 mph）時，電子控制器就會切斷電動機的電源。相對於沒有電機的自行車，電動助力車在遇到逆風狀態或丘陵地帶時就有優勢，此時電動助力車的騎手就比較省力。不過電動助力車相對普通自行車來說價格比較昂貴，因而盜竊風險也更高，而且電動助力車相對來說更重。^[1]

參考文獻

^ Castro, A. Physical activity of electric bicycle users compared to conventional bicycle users and non-cyclists: Insights based on health and transport data from an online survey in seven European cities. Transportation Research Interdisciplinary Perspectives. 2019, 1: 100017. doi:10.1016/j.trip.2019.100017  .

[Castro-1] Castro, A. Physical activity of electric bicycle users compared to conventional bicycle users and non-cyclists: Insights based on health and transport data from an online survey in seven European cities. Transportation Research Interdisciplinary Perspectives. 2019, 1: 100017. doi:10.1016/j.trip.2019.100017  .

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