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What does a yellow reflector (cat's eye) placed on the road mean?
道路上的黄色反光标识（猫眼）代表什么意思？
Yellow reflectors help identify a yellow no-passing line.
黄色反光钉辅助标示黄色禁止超车线。
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Do not cross the yellow line on your side to overtake a motor vehicle. Actual markings and other passing rules still apply.
不能为超越机动车而跨过自己一侧的黄色禁止超车线；仍须按实际标线和其他超车规则判断。