1. Trolley imatengera mapangidwe a misewu/njanji, omwe amatha kugwiritsidwanso ntchito m'machulu angapo kuti apewe kuwononga zinthu.
2. Malo osalowa madzi amatengera ntchito yowongolera kutali kuti achepetse kuchuluka kwa ogwira ntchito komanso kuchepetsa kuchuluka kwa ogwira ntchito.
3. Dzanja logwira ntchito limatha kusinthasintha momasuka ndikukulitsa, ntchitoyo ndi yosinthika, ndipo imatha kusinthidwa kukhala magawo osiyanasiyana.
4. Makina oyenda amatha kukhala ndi mtundu woyenda kapena mtundu wa matayala, popanda kuyika mayendedwe, ndipo amatha kusunthidwa mwachangu kupita kumalo opangira zomangamanga, kuchepetsa nthawi yokonzekera zomanga.
5. The zida kugawanika zitsulo kapamwamba posungira kutembenuza ndi kutumizira chipangizo, ndi zitsulo bala kudyetsa, basi kutembenukira ndi kotenga nthawi kusuntha malo ntchito, palibe chifukwa pamanja kunyamula kapamwamba zitsulo, kuchepetsa kwambiri mphamvu ya ogwira ntchito ndi kuchepetsa chiwerengero cha ogwira ntchito.