I-191 ipakishwe kwiidrama zesinyithi ezinobunzima obuyi-220kg kwaye inexesha lokugcina leenyanga ezintandathu kwi-20°C. Amaqondo obushushu aphezulu aya kulifinyeza ixesha lokugcina. Gcina kwindawo epholileyo, enomoya, kude nelanga ngqo kwaye kude nemithombo yobushushu. Imveliso iyatsha kwaye kufuneka igcinwe kude namalangatye avulekileyo.