Ndi chitukuko cha nthawi, zikhalidwe zachipatala zikuyenda bwino ndikutukuka, ndipo zida zamankhwala zomwe zimagwiritsidwa ntchito pamsika zimasinthidwanso nthawi zonse. Tsopano zipatala zambiri zikhazikitsa mabampu azachipatala, koma anthu ambiri sadziwa tanthauzo lakuwagwiritsa ntchito. Ndiye kuyika ma bumpers azachipatala kumatanthauza chiyani?
Tsopano ma bumpers azachipatala amatha kuwoneka osati m'zipatala zokha, komanso m'nyumba zosungirako okalamba kapena malo omwe ali ndi ntchito zambiri za okalamba. Chifukwa cholembera chachipatala choletsa kugundana chimatha kuthandiza okalamba kuyenda, mawonekedwe ake ndi owolowa manja, komanso amatha kukhala ndi gawo loletsa kugunda pakagwiritsidwa ntchito. Tsopano zitha kuwoneka m'malo ambiri opezeka anthu ambiri, makamaka kwa olumala, zimatha kupereka chithandizo chamunthu payekha kuti zikwaniritse zosowa zaumunthu, kotero zimayikidwa m'malo ake othandizira pa ntchito yomanga, kotero kuti zitha kukhala Onetsetsani kuti chitetezo cha olumala, okalamba, etc.Zipatala zimagwiritsa ntchito zida zachipatala kuti ntchito zawo zikhale zotetezeka, kotero tsopano zolembera zamankhwala zimagwiritsidwa ntchito kwambiri m'magawo ambiri.
