oa CSIR Science Scope - Investigating enzymebased liquid stabilisers in road construction : sustainable future



A total road network of 760 000 km criss-crosses South Africa. According to the Department of Transport, 17 000 km of this is surfaced national roads, 56 000 surfaced provincial roads, 170 000 km surfaced and unsurfaced urban roads, while 300 000 km is gravel provincial roads and 220 000 km unclassified roads. Unclassified roads include access roads in rural communities and roads in settlements on the urban periphery. This shows that the country's road network comprises mostly unpaved roads.


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