Kev txiav txim siab rau Kev Yuav Cov Tsheb Ciav Hlau
Thaum yuav cov tsheb ciav hlau, cov ntsiab lus tseem ceeb suav nrog kev xav txog daim ntawv thov, xws li tus qauv lossis nqaim ntsuas, hnyav thauj los yog lub teeb rail, thiab ballasted lossis tsis ballasted lem. Kev txiav txim siab txog nyiaj txiag, suav nrog cov khoom siv, hom, thiab qhov ntev, ua lub luag haujlwm tseem ceeb, xav tau cov peev nyiaj meej thiab cov kev xaiv uas haum rau ob qho kev xav tau.
Kev xaiv ntawm cov kab tshiab thiab siv tau suav nrog kev ntsuas qhov ua tau zoo thiab ua haujlwm ntev tiv thaiv tus nqi-zoo. Lub hauv paus ntawm kev yuav khoom, tsis hais los ntawm cov tuam txhab, cov neeg muag khoom, lossis cov neeg muag khoom, xav tau kev tshawb fawb kom zoo txhawm rau txheeb xyuas cov neeg muag khoom muaj koob npe muab cov kev ua tau zoo ntawm tus nqi tsim nyog.
Kev koom tes nrog tus neeg muag khoom muaj npe nrov yog qhov tseem ceeb rau kev lees paub zoo, kev txhawb nqa thaum lub sijhawm yuav khoom, thiab kev lees paub thiab kev pab tom qab muag. Cov lus qhia rau kev yuav khoom muaj txiaj ntsig suav nrog kev txheeb xyuas cov kev xav tau, tshawb xyuas cov neeg muag khoom, sib piv cov lus qhia thiab cov kev pabcuam, thov cov qauv lossis kev ua qauv qhia, tshuaj xyuas cov lus lav, thiab txiav txim siab tag nrho cov nqi ntawm cov tswv cuab, suav nrog kev saib xyuas.
