Curb drainage channel ndi mwala wotchinga ndi ngalande yolowera m'mphepete mwa msewu, motero imatchedwanso drainage kerb. Njira ya Curb drainage ingagwiritsidwe ntchito panjira zonse zolimba zomwe zimafunikira kuthirira ngalande, monga poimika magalimoto, pokwerera Mabasi ndi malo oyenda pang'onopang'ono pamagalimoto. Mulingo wonyamula katundu wa dongosolo akhoza kufika D400.
Kutalika kwakukulu kwa njira yotsekera ngalande: 305mm, 500mm.