Ukukhusela amadangatye kubandakanya ukwahlulwa kwemvelaphi yogqabhuko-dubulo kwiigesi ezinokugqabhuka kunye nothuli..
Thatha i-motor-proof-proof, njengokuba. Inezinga eliphezulu kakhulu lokhuseleko. Kwimeko yesiphaluka esifutshane okanye ukungaphumeleli, iqinisekisa ukuba akukho zintlantsi okanye amaqondo obushushu aphezulu athunyelwa kwindawo yangaphandle.