puffin crossing
柯林斯詞典
1. N a UK pedestrian road crossing with traffic lights signalling red to stop the traffic flow when pedestrians are seen on the crossing by infrared detectors. The green signal reappears when no pedestrians are seen on the crossing (英國的)智能人行橫道; 當(dāng)人行橫道上的紅外探測器檢測到行人時，紅燈亮起阻止車輛通過；未檢測到行人時，綠燈會重新亮起
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