The N4 National route runs from the Skilpadshek border post into Botswana in North West, through Gauteng, to the border post of Mozambique at Komatipoort in Mpumalanga - over a distance of approximatelly 650 km.
The N4 is an arterial route which forms the South African section of the Walvis Bay to Maputo highway, which links the east and west coasts of Southern Africa.
Since the completion of the Trans Kgalagadi Highway through Botswana, the entire route is now a world-class standard highway.
The South African section in the west links Gaborone in Botswana with Pretoria, then further east linking Pretoria with Nelspruit and Maputo in Mozambique. The section from Pretoria to Middelburg is a dual carriage motorway. The remainder is wide shouldered single carriageway highway. Many section are tolled as part of the Maputo Corridor Toll Route.
The western section has recently been upgraded as the Platinum Highway, bypassing Pretoria to the north as a dual carriage motorway, becoming single carriage motorway further west.
The Rustenburg freeway bypass is currently being completed. The remainder of the route is single carriageway highway. This western section is also tolled.
The N4 is 720 kilometers (447 miles) long.
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