Cov pa hydraulic zog steering twj tso kua mis thawb cov kua hydraulic tawm ntawm lub siab siab txhawm rau tsim kom muaj qhov sib txawv ntawm qhov sib txawv uas txhais ua "kev pab lub zog" rau lub tsheb kauj vab.Lub tshuab fais fab steering twj tso kua mis siv hauv hydraulic tsav tshuab, yog li nws tseem hu ua hydraulic twj tso kua mis.