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红外线闪光路标 英国的交通当局在一些较为偏僻的公路段上安置有小巧玲珑的红外线闪光路标,这种路标在夜幕低垂时格外引人注目,它可以自动记录车行流量,监视行驶中的车辆间距。当两车相距过近时,路标便会闪光,以示警告。并显现出“挨得太近了”的字样,提醒驾驶员注意行车安全。 音响路标
Infra-red flashing signs British traffic authorities have placed petty infrared flashing signposts on some of the more remote sections of the road, particularly noticeable when dusk falls, and it can automatically record vehicle traffic and monitor the distance between moving vehicles . When the two cars are too close, the sign will flash to show warning. And showed “get too close” message to remind drivers to pay attention to driving safety. Audio road sign