Where is black ice likely to occur on the road?
- On a hard shoulder only.
- In mild weather on a coastal road.
- Only in built-up areas.
- Correct answerIn sheltered or shaded areas.
Explanation
Black ice occurs when moisture freezes on a very cold surface. Exposed roads and bridges can have black ice when other sections of the same road may be clear. Black ice is virtually invisible, and so presents a particular hazard for motorcyclists and drivers. In wintry conditions, if you notice a reduction in tyre noise or if the steering becomes lighter, you should suspect that there may be black ice on the road.
Read in Chinese
路面上哪里可能出现黑冰？
- 仅限在硬路肩上。
- 在沿海公路上的温和天气中。
- 仅限建筑区域。
- 在有遮挡或阴凉的区域。
黑冰是在非常寒冷的表面上冻结的水分形成的。暴露的道路和桥梁可能会有黑冰，而同一路段的其他部分可能是清晰的。黑冰几乎是看不见的，因此对摩托车手和司机构成特别的危险。在冬季条件下，如果你注意到轮胎噪音减少或转向变轻，你应该怀疑路面上可能有黑冰。