无人看守的铁路道口，应当在距道口一定距离处设置警示标志。

At a railway crossing not watched by any one, warning marks shall be set up at a certain distance from the crossing.

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通过无人看守的铁路道口时，没有看到火车到来可以加速通过。

When passing an unmanned level crossing, the driver may speed up and pass if he sees no train is coming.

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