世界范围的旅游一般用什么交通方式？

其实还是火车，虽然火车出过事，但是相对而言，危险的概率还是小的
汽车肯定没有自行车安全了，飞机国内出事的概率较小
所以安全系数从高到低 火车 飞机 汽车
A matter of fact, or train, although the trains have worked out, but relatively speaking, the probability of risk is still small
Bicycle safety car certainly did not, and the aircraft crash probability of the smaller domestic
Therefore, from high to low factor of safety cars trains planes