The rapid growth of Nairobi City County due to the migration of people from the rural part of the Country increased the population which results increase in slums. Also, Nairobi as the capital city and its urbanization attracts large number of citizens and foreigners from the neighboring countries and in return increasing its populations which results to high demand for residential housing.

The growth of Kenya's economy had led to increased urbanization and thus creating a huge demand for residential buildings. Therefore, as a result of high population of people moving from rural areas to the city in pursuit of employment, to join universities, some for the conducive climate and others seeking health facilities from renown hospitals like Nairobi Hospital, Aga Khan University Hospital and Kenyatta hospital specially in Nairobi.

There is an increase in congestion along Thika Superhighway especially during peak hours thus
this research will help in managing traffic congestion by understanding and looking at the viability
of employing the use of reversible lanes along Thika superhighway. This will help the motorists
and other road users reduce their travel time thus reduce road user costs and increase the efficiency
of Thika superhighway while minimizing the cost that would have been used for another road
expansion.