Umjelo we-Curb drainage lilitye lomgca kunye nomjelo wokuhambisa amanzi ofakwe kumda wendlela, ngoko ke ikwabizwa ngokuba yi-drainage kerb. Umjelo wemijelo ye-Curb drainage unokufakwa kuyo yonke i-pavumente eqinileyo efuna ukucocwa, njengendawo yokupaka, isikhululo sebhasi kunye nendawo ehamba kancinci yezithuthi. Umgangatho wokuthwala umthwalo wenkqubo unokufikelela kwi-D400.
Umphakamo ongundoqo wendlela yokuhambisa amanzi: 305mm, 500mm.