The roll-trailers, which are towed by special tractors, the Tugmasters, have dimensions to suit containers, and can be fitted with sideboards for the carriage of break-bulk cargoes.
Iinqwelo ezirhuqwayo zokubumba, ngetrekta ezizodwa zokurhuqa,iingcali ezitsala kakhulu, ezinomlinganiso olungele isikhongozeli, kwaye inokulinganiswa kunye namacala ebhodi ukwenzela ikhareji lokophulwa komthwalo osindayo