The N3 is the busiest highway in South Africa and is a very busy truck route. Since Johannesburg is not located near a body of water such as a river or an ocean, most of the city's exports rely on the Port of Durban to export its goods.
The N3 highway is the most traveled road in South Africa and serves as a significant truck route. Because Johannesburg lacks a coastline, it relies heavily on the Port of Durban for exporting its products.