Durban, South Africa's second-largest city, has seven freeways: the N2, N3, M4 (Northern Freeway), M4 (Southern Freeway), M7, M13, and M19.
The two highest-order roads are the coastal N2 and the inland N3, which intersect at "Spaghetti Junction," otherwise known as the Westville Four-Level Interchange. This interchange is the only civil engineering example of a proper four-level interchange anywhere in South Africa.
The N2 connects Durban with Cape Town via East London and Port Elizabeth, and with Richards Bay on the north coast of KwaZulu-Natal (KZN). The N2 is better known as the Outer Ring Road. The N3 connects Durban with Johannesburg. The M4 Northern Freeway links the northern suburbs of Durban with the KZN North Coast, while the M4 Southern Freeway connects the Durban CBD with Durban International Airport and the KZN South Coast. The M7 connects the N2 and the Durban South Industrial Basin with the N3 and Pinetown via Queensburgh. The M19 connects the N2 with Pinetown via Westville. The M13 acts as an alternative to the N3, which is tolled at Mariannhill, as well as feeding traffic through Gillits, Kloof, Westville and Durban.
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