Public Transport Planning and Management in Developing Countries

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“K18880” — 2014/11/6 — 12:31 — page 151 — #161

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Public Transport Planning and Management in Developing Countries

6.5.2.1 Objective function

The formulation in equation 8 is a combinatorial type optimization problem. The user

cost component consists of minimizing the total waiting time and in-vehicle time of the

commuters. The operator cost component consists of minimizing the total vehicle operating

cost. Here, the users and operators objective are conflicting in nature, for example, decrease

in waiting time will result in increase in vehicle operating cost for the operator. Also, the

in-vehicle travel time is a variable and is a function of