作者Xforce
http://www.popsci.com/popsci/science/67d40b4511b84010vgnvcm1000004eecbccdrcrd.html
5. This is the rate for Great Britain, where the government tracks deaths per billion passenger- kilometers. Data from 1991–2000 showed the following rates: airplane, 0.02; boat, 0.4; bus, 0.4; rail, 0.49; car, 3.1; bicycle, 42; foot, 59; and motorcycle, 106.
死亡數/億人*公里
機車跟飛機 差5300倍
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