旅客列车车厢内发生火灾时，火灾烟气的运动状况直接影响旅客的人身安全，往往造成重大的人员伤亡和巨大的财产损失。

When fires break out in a passenger carriage, the movement of the smoke directly threatens safety of passengers and leads to great casualties and enormous property loss.

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承运人对旅客人身伤亡应承担违约赔偿责任，但有时可能出现违约责任和侵权责任竞合。

However, the liabilities for breach of contract do coincide with the liabilities for tort sometimes.

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自从1964年，日本铁路体系运行以来，火车已运送18亿旅客，无一伤亡。

SINCE the Japanese system went into service in1964, the trains have carried more than 1.8 billion travelers without an injury or a fatality.

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