I- “must” yokulayisha ngokuphepha nokulayisha ama-trailer ngokuphepha!
Hlangana nokucaciswa kwe-OSHA ngezinhlobonhlobo zethu eziningi zeTrailer Stabilizing Jacks OSHA 1910.178 (k) (3) ithi “Amajack alungisiwe kungadingeka ukusekela i-semi-trailer nokuvikela ukukhuphuka ngesikhathi kulayishwa noma kuthulwa lapho i-trailer ingahlobene nogandaganda” .