道(dao)(dao)路(lu)(lu)(lu)劃線(xian)(xian)工(gong)藝(yi)(yi)是(shi)(shi)(shi)道(dao)(dao)路(lu)(lu)(lu)建設(she)中重要的環節，它(ta)包(bao)括路(lu)(lu)(lu)面(mian)(mian)標線(xian)(xian)、交通(tong)標志(zhi)、護欄等(deng)設(she)施(shi)。道(dao)(dao)路(lu)(lu)(lu)劃線(xian)(xian)的主要作(zuo)用是(shi)(shi)(shi)提高(gao)(gao)道(dao)(dao)路(lu)(lu)(lu)安全性，引導(dao)交通(tong)流向(xiang)，以及提高(gao)(gao)道(dao)(dao)路(lu)(lu)(lu)使用效(xiao)率(lv)。劃線(xian)(xian)工(gong)藝(yi)(yi)包(bao)括熱熔(rong)(rong)(rong)劃線(xian)(xian)、冷(leng)(leng)漆劃線(xian)(xian)和熱熔(rong)(rong)(rong)+冷(leng)(leng)漆劃線(xian)(xian)等(deng)幾(ji)種方式(shi)(shi)，其中熱熔(rong)(rong)(rong)方式(shi)(shi)適用于大(da)面(mian)(mian)積的標線(xian)(xian)施(shi)工(gong)，冷(leng)(leng)漆方式(shi)(shi)則適用于小面(mian)(mian)積和夜間標線(xian)(xian)的施(shi)工(gong)。護欄和標志(zhi)牌(pai)等(deng)設(she)施(shi)的安裝也是(shi)(shi)(shi)劃線(xian)(xian)工(gong)藝(yi)(yi)的重要組成部分，它(ta)們(men)可以提高(gao)(gao)道(dao)(dao)路(lu)(lu)(lu)的安全性。