Itshayela ezingenathuli, ezikwabizwa ngokuba zizithuthi ezingenathuli zokutshayela, zinomsebenzi wokutshayela nokutshayela. Izixhobo zifuna ukulungiswa nokugcinwa rhoqo.
Izinto zokutshayela ezingenathuli zisetyenziselwa ukucoca igrabile yomhlaba ozinzisiweyo ngaphandle kwesamente phambi kokusasaza i-oyile kwiindlela ezintsha, ukucoca umphezulu wendlela emva kokusila ngexesha lokwakhiwa kokulungiswa kwendlela, kunye nokuphinda kusetyenziswe igrabile engaphezulu emva kokwakhiwa kwegrabile ngaxeshanye. Ingasetyenziselwa ukucoca iindlela kwezinye iindawo ezifana nezityalo zokuxuba i-asphalt okanye izityalo zokuxuba i-samente, imigca ye-trunk yelizwe kunye nephondo, amacandelo angcoliseke kakhulu kwiindlela zikamasipala, njl.
Iitshayela ezingenathuli zisetyenziswa kakhulu kuhola wendlela kunye nolwakhiwo lukamasipala.
Itshayela engenathuli ingasetyenziselwa ukutshayela okanye ukufunxa okumsulwa. Amacala asekhohlo nasekunene axhotyiswe ngeebrashi ezisecaleni zokugaya kunye neekona zokucoca kunye neekona zamatye ezinqambileyo.