英國 2016 motorway 傷亡率: (per billion vehicle kilometres): pp.69 Fatal = 19 / 1.5 = 12.66 倍 Fatal or serious = 316 / 14 = 22.57 倍 美國 2016 motorway 傷率：(per billion vehicle miles): Passenger car: https://ww … 閱讀全文 各國機車傷亡數據計算