交通信號燈是(shi)指揮交(jiao)通運行的信號(hao)燈(deng)(deng),一般(ban)由紅燈(deng)(deng)、綠(lv)(lv)燈(deng)(deng)、黃燈(deng)(deng)組成。紅燈(deng)(deng)表示禁止通行,綠(lv)(lv)燈(deng)(deng)表示準許通行,黃燈(deng)(deng)表示警示。
交通信(xin)號(hao)(hao)燈(deng)(deng)分為:機(ji)動(dong)車信(xin)號(hao)(hao)燈(deng)(deng)、非(fei)機(ji)動(dong)車信(xin)號(hao)(hao)燈(deng)(deng)、人行橫道(dao)信(xin)號(hao)(hao)燈(deng)(deng)、方(fang)向(xiang)指(zhi)(zhi)示(shi)指(zhi)(zhi)示(shi)燈(deng)(deng)(箭頭信(xin)號(hao)(hao)燈(deng)(deng))、車道(dao)信(xin)號(hao)(hao)燈(deng)(deng)、閃光警告(gao)信(xin)號(hao)(hao)燈(deng)(deng)、道(dao)路(lu)與鐵路(lu)平面(mian)交叉(cha)道(dao)口信(xin)號(hao)(hao)燈(deng)(deng)。
在十字路口,四(si)面都懸掛著(zhu)紅(hong)、黃、綠(lv)、三色(se)交(jiao)通(tong)(tong)信號(hao)燈(deng),它是不(bu)(bu)出聲的(de)“交(jiao)通(tong)(tong)警察”。紅(hong)綠(lv)燈(deng)是國際統一(yi)的(de)交(jiao)通(tong)(tong)信號(hao)燈(deng)。紅(hong)燈(deng)是停止信號(hao),綠(lv)燈(deng)是通(tong)(tong)行(xing)(xing)(xing)(xing)信號(hao)。交(jiao)叉路口,幾個(ge)方向來的(de)車(che)都匯集在這兒,有的(de)要直(zhi)行(xing)(xing)(xing)(xing),有的(de)要拐彎(wan),到底讓誰先(xian)走,這就是要聽從紅(hong)綠(lv)燈(deng)指揮(hui)。紅(hong)燈(deng)亮,禁(jin)止直(zhi)行(xing)(xing)(xing)(xing)或左(zuo)轉(zhuan)彎(wan),在不(bu)(bu)礙行(xing)(xing)(xing)(xing)人(ren)和(he)車(che)輛情況(kuang)下,允許車(che)輛右轉(zhuan)彎(wan);綠(lv)燈(deng)亮,準(zhun)許車(che)輛直(zhi)行(xing)(xing)(xing)(xing)或轉(zhuan)彎(wan);黃燈(deng)亮,停在路口停止線(xian)或人(ren)行(xing)(xing)(xing)(xing)橫(heng)道線(xian)以內,已經繼續通(tong)(tong)行(xing)(xing)(xing)(xing);黃燈(deng)閃爍時,警告車(che)輛注(zhu)意安全。
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