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Economic activities in South Africa during the past decade have caused, inter alia, road traffic congestion to accelerate annually and road infrastructure to deteriorate rapidly. Motor vehicle sales, correlated with economic trends and the economic empowerment of citizens, have and still are increasing at a faster rate than the supply of necessary infrastructure. As such, congestion, especially in the Gauteng area, has reached unacceptable levels during peak hours, necessitating the upgradingdoi:10.4102/jtscm.v4i1.10 fatcat:o2c3bku7gjhw5gzbslpqbessbi