Izwa ukusebenza kahle okuthuthukisiwe, izikhathi zokugijima ezinwetshiwe, ukuphepha okungenakuqhathaniswa, nezindleko zokulungisa ezincishisiwe ngezixazululo zethu zamandla ezisusa zezimoto ezinesivinini esiphansi (okuhlanganisa nezinqola zegalofu) nezinhlelo zokusebenza zezimboni (okuhlanganisa ama-forklift, amapulatifomu omsebenzi wasemoyeni, nemishini yokuhlanza phansi) . Faka kodwa ungagcini nje kumamodeli alandelayo: