In Zambia some roads are designated as numbered routes to help with navigation. There is a nationwide numbering scheme consisting of Inter-Territorial roads, Territorial roads, District roads and Rural roads.

The T3 is a Trunk Road in Zambia. The road runs from Kapiri Mposhi via Ndola, Kitwe and Chingola to Kasumbalesa on the border with DR Congo. The entire route is a toll road.