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How Informal Public Transport Network complement to Formal Public Transport Network for efficiency.

The rapid pace of urbanization has made the Transport Network (TN) of prime importance for efficient functioning of cities. This pace is putting ever increasing load on Public Transport Network (PTN). The public transport network is offered by both formal and informal sectors. Looking in the dependency of people on public transport network and inadequacy of the Formal Public Transport Network (FPTN), it generates apt conditions for flourishing of Informal Public Transport Network (IPTN). This establishes the need to get insight into informal public transport network. The informal public transport network is the network provided by the private owners without fix route and stoppages. The service that emerges on this basis caters effectively to the user’s expectations and appears to be highly integrated with urban fabric. It helps to connect the formal public transport network, neighborhood in the proximity and provides last mile connectivity. It also offers a variety of options to the commuters that may be flexible and affordable. Informal public transport network along with formal public transport network and urban environment formed the complex system. In the efforts to have the insight, the complex nature of system poses challenges to the conventional approach which is mainly based on reductionist approach. To have a better understanding of the informal public transport network, Complexity science concepts are applied to derive an analytical framework. The research explores inter-connectedness and interdependence, emergence, role of adaptive agents, and self-organization in an informal public transport network. Further, it explores the co-evolution within an informal public transport network and also with the formal public transport network. The research further highlights the potential of informal public transport network in complementing the formal public transport network.