大學學校劃線分為:熱熔(rong)標(biao)(biao)線(xian)(xian)(xian)(xian)，常溫(wen)冷漆標(biao)(biao)線(xian)(xian)(xian)(xian)，彩(cai)色防滑標(biao)(biao)線(xian)(xian)(xian)(xian)，振蕩(dang)防滑反光(guang)標(biao)(biao)線(xian)(xian)(xian)(xian)和(he)預(yu)成型標(biao)(biao)線(xian)(xian)(xian)(xian)。 熱熔(rong)標(biao)(biao)線(xian)(xian)(xian)(xian)是我(wo)國道(dao)路標(biao)(biao)線(xian)(xian)(xian)(xian)上應用最廣(guang)的一種標(biao)(biao)線(xian)(xian)(xian)(xian)。他施工時間短(duan)，耐磨性(xing)高，造價低。 道(dao)路交通標(biao)(biao)線(xian)(xian)(xian)(xian)主要(yao)劃(hua)設(she)于道(dao)路表面，經受日曬雨淋，風(feng)雪冰凍，遭受車輛的沖擊磨耗，因(yin)此(ci)對其性(xing)能(neng)有嚴格的要(yao)求。首先(xian)要(yao)求干(gan)燥(zao)時間短(duan)，操作簡單，以(yi)減(jian)少交通干(gan)擾(rao)；其次要(yao)求反射能(neng)力強，色彩(cai)鮮(xian)明，反光(guang)度(du)強，使白(bai)天(tian)、夜晚都有良好的能(neng)見度(du)；第三，應具(ju)有抗滑性(xing)和(he)耐磨性(xing)，以(yi)保證行車安(an)全和(he)使用壽命。

根據圖樣和技術要(yao)求(qiu)，在(zai)毛坯(pi)或(huo)半成品上用(yong)劃(hua)(hua)(hua)(hua)線工(gong)(gong)(gong)具畫出(chu)(chu)加工(gong)(gong)(gong)界(jie)線，或(huo)劃(hua)(hua)(hua)(hua)出(chu)(chu)作為(wei)(wei)基(ji)準的(de)(de)(de)點、線的(de)(de)(de)操作過程稱(cheng)(cheng)(cheng)為(wei)(wei)劃(hua)(hua)(hua)(hua)線。劃(hua)(hua)(hua)(hua)線分為(wei)(wei)平面劃(hua)(hua)(hua)(hua)線和立(li)體劃(hua)(hua)(hua)(hua)線兩種。只需要(yao)在(zai)工(gong)(gong)(gong)件(jian)一(yi)個(ge)表(biao)面上劃(hua)(hua)(hua)(hua)線即能明確表(biao)明加工(gong)(gong)(gong)界(jie)限的(de)(de)(de)，稱(cheng)(cheng)(cheng)之為(wei)(wei)平面劃(hua)(hua)(hua)(hua)線；需要(yao)在(zai)工(gong)(gong)(gong)件(jian)幾個(ge)互成不同角度(du)（一(yi)般(ban)是互相(xiang)垂直）的(de)(de)(de)表(biao)面上劃(hua)(hua)(hua)(hua)線，才能明確表(biao)明加工(gong)(gong)(gong)界(jie)限的(de)(de)(de)，稱(cheng)(cheng)(cheng)為(wei)(wei)立(li)體劃(hua)(hua)(hua)(hua)線。對(dui)劃(hua)(hua)(hua)(hua)線的(de)(de)(de)基(ji)本(ben)要(yao)求(qiu)是線條清晰(xi)勻(yun)稱(cheng)(cheng)(cheng)，定(ding)型、定(ding)位尺寸準確。由于劃(hua)(hua)(hua)(hua)線的(de)(de)(de)線條有一(yi)定(ding)寬度(du)，一(yi)般(ban)要(yao)求(qiu)精度(du)達(da)到0.25-0.5mm。應(ying)當注意，工(gong)(gong)(gong)件(jian)的(de)(de)(de)加工(gong)(gong)(gong)精度(du)不能完全由劃(hua)(hua)(hua)(hua)線確定(ding)，而應(ying)該(gai)在(zai)加工(gong)(gong)(gong)過程中(zhong)通過測量來(lai)保證。