道路安全研究中心最近的调查主要集中在乡村道路上，因为尽管乡村地区的人口只占全国的20%左右，但在这些地区发生的车祸却有很高的致死率。

The recent CERS survey focused on rural roads because crashes in those areas have such a high fatality rate despite the fact that only about 20 percent of the population lives in a rural area.

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对于其他一些货运公司的调查发现，报酬最高的驾驶员是最不容易出车祸的驾驶员。

A survey of other trucking companies found that the highest-paid drivers were the least likely to have had an accident.

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车祸发生的原因仍然在调查之中。

The cause of that crash still under investigation.

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