Hluav taws xob thaiv rooj vag systems yog ib qho tseem ceeb ntawm cov chaw nres tsheb ntse. Cov tshuab no tuaj yeem txheeb xyuas lub tsheb sab hauv thiab sab nraud, ua kom muaj kev ruaj ntseg ntawm kev tswj xyuas tsheb. Tsis tas li ntawd, lawv tuaj yeem suav cov nyiaj them rau txhua lub tsheb, sau lub sijhawm siv tau ntawm cov tsheb sab hauv thiab khaws cov ntaub ntawv ntawm cov tsheb sab nraud, thiab muab kev ceeb toom rau lwm cov ntaub ntawv nres tsheb (xws li muaj chaw nres tsheb), yog li ua kom yooj yim rau kev tswj xyuas chaw nres tsheb.
Chaw nres tsheb thaiv rooj vag tuaj yeem muab faib ua siab - nrawm, nruab nrab- nrawm, thiab qis- hom ceev. High- rooj vag ceev feem ntau yog siv ntawm cov chaw nres tsheb loj; nruab nrab- cov rooj vag nrawm yog siv hauv cov chaw ua lag luam, chaw nres tsheb, thiab khw muag khoom; thiab qis- cov rooj vag nrawm yog siv hauv cov zej zog cov zej zog uas yuav tsum tau nruj me ntsis. Lub rooj vag qhov nrawm nrawm yog cuam tshuam nrog qhov ntev thiab qhov hnyav ntawm caj npab barrier. Cov neeg siv tuaj yeem xaiv lub rooj vag hluav taws xob tsim nyog raws li lawv cov kev xav tau tshwj xeeb.
Thaum yuav lub rooj vag hluav taws xob, cov neeg siv yuav tsum piav qhia lawv cov kev xav tau thiab qhov xwm txheej tiag tiag rau cov chaw tsim khoom. Piv txwv li, hauv qhov chaw nres tsheb hauv chaw nres tsheb, yog tias txoj kab tsheb siab yog 3 meters, txhua txoj kab yuav tsum muaj tsawg kawg yog 3 mus rau 4 meters siab. Yog hais tias ib tug ncaj barrier caj npab yog tsis tsim nyog, ib tug folding barrier caj npab yuav siv tau, thiab tus neeg muag khoom muaj peev xwm muab ib tug tshwj xeeb kev daws teeb meem raws li qhov yuav tsum tau.