A mathematical model is developed in this study to improve the accessibility of a bus service. To formulate the optimization model, a segment of a bus route is given, on which a number of demand entry points are realistically distributed. The developed objective total cost function (e.g., the sum of supplier and user costs) is minimized by optimizing the number and locations of stops, subject to non-additive users’ value of time. A numerical example is designed to demonstrate the effectiveness of the proposed methodology to optimize the bus stop location problem. The sensitivity of the total cost to various parameters (e.g. value of user’s time, access speed, and demand density) and the effect of the parameters to the optimal stop location are analyzed and discussed.
