學校劃線分為:熱熔標(biao)(biao)(biao)線(xian)(xian)(xian)(xian)，常溫冷漆標(biao)(biao)(biao)線(xian)(xian)(xian)(xian)，彩色防滑(hua)標(biao)(biao)(biao)線(xian)(xian)(xian)(xian)，振蕩防滑(hua)反(fan)光(guang)標(biao)(biao)(biao)線(xian)(xian)(xian)(xian)和預成型標(biao)(biao)(biao)線(xian)(xian)(xian)(xian)。 熱熔標(biao)(biao)(biao)線(xian)(xian)(xian)(xian)是我國(guo)道(dao)(dao)路標(biao)(biao)(biao)線(xian)(xian)(xian)(xian)上應用(yong)最(zui)廣的一(yi)種標(biao)(biao)(biao)線(xian)(xian)(xian)(xian)。他施(shi)工時間短(duan)，耐磨性(xing)(xing)(xing)高(gao)，造價低。 道(dao)(dao)路交通標(biao)(biao)(biao)線(xian)(xian)(xian)(xian)主要(yao)劃設(she)于(yu)道(dao)(dao)路表面，經(jing)受日曬雨淋(lin)，風雪(xue)冰凍，遭受車輛的沖擊磨耗，因此對(dui)其性(xing)(xing)(xing)能有(you)嚴格的要(yao)求。首先要(yao)求干(gan)燥時間短(duan)，操作簡單，以(yi)減少交通干(gan)擾(rao)；其次要(yao)求反(fan)射能力強(qiang)，色彩鮮明，反(fan)光(guang)度強(qiang)，使(shi)白天、夜晚都有(you)良好的能見度；第(di)三，應具有(you)抗滑(hua)性(xing)(xing)(xing)和耐磨性(xing)(xing)(xing)，以(yi)保證行車安全和使(shi)用(yong)壽命。

根據圖樣和技術要(yao)(yao)求(qiu)(qiu)，在毛坯或(huo)半成品上(shang)(shang)用劃(hua)(hua)線(xian)(xian)(xian)工(gong)具畫出加(jia)(jia)(jia)(jia)工(gong)界(jie)(jie)線(xian)(xian)(xian)，或(huo)劃(hua)(hua)出作為(wei)(wei)基(ji)準的(de)(de)點、線(xian)(xian)(xian)的(de)(de)操作過(guo)程稱(cheng)為(wei)(wei)劃(hua)(hua)線(xian)(xian)(xian)。劃(hua)(hua)線(xian)(xian)(xian)分為(wei)(wei)平(ping)面(mian)劃(hua)(hua)線(xian)(xian)(xian)和立體劃(hua)(hua)線(xian)(xian)(xian)兩種。只(zhi)需(xu)要(yao)(yao)在工(gong)件一(yi)個(ge)表面(mian)上(shang)(shang)劃(hua)(hua)線(xian)(xian)(xian)即(ji)能明(ming)確(que)(que)表明(ming)加(jia)(jia)(jia)(jia)工(gong)界(jie)(jie)限(xian)的(de)(de)，稱(cheng)之為(wei)(wei)平(ping)面(mian)劃(hua)(hua)線(xian)(xian)(xian)；需(xu)要(yao)(yao)在工(gong)件幾(ji)個(ge)互(hu)成不同角度(du)(du)（一(yi)般是互(hu)相垂直）的(de)(de)表面(mian)上(shang)(shang)劃(hua)(hua)線(xian)(xian)(xian)，才能明(ming)確(que)(que)表明(ming)加(jia)(jia)(jia)(jia)工(gong)界(jie)(jie)限(xian)的(de)(de)，稱(cheng)為(wei)(wei)立體劃(hua)(hua)線(xian)(xian)(xian)。對(dui)劃(hua)(hua)線(xian)(xian)(xian)的(de)(de)基(ji)本(ben)要(yao)(yao)求(qiu)(qiu)是線(xian)(xian)(xian)條清(qing)晰勻稱(cheng)，定(ding)(ding)型、定(ding)(ding)位尺(chi)寸準確(que)(que)。由(you)于劃(hua)(hua)線(xian)(xian)(xian)的(de)(de)線(xian)(xian)(xian)條有一(yi)定(ding)(ding)寬度(du)(du)，一(yi)般要(yao)(yao)求(qiu)(qiu)精(jing)度(du)(du)達到(dao)0.25-0.5mm。應當注意(yi)，工(gong)件的(de)(de)加(jia)(jia)(jia)(jia)工(gong)精(jing)度(du)(du)不能完全由(you)劃(hua)(hua)線(xian)(xian)(xian)確(que)(que)定(ding)(ding)，而應該在加(jia)(jia)(jia)(jia)工(gong)過(guo)程中通過(guo)測量來(lai)保證。