Analysis of Network Model of Urban Taxi Services by Mathematical Optimization (Case study: Tehran Taxi Services)

A network model is developed for optimizing system of vacant and occupied taxis in urban network for modifying level of service. The mentioned model can determine performance of system in equilibrium situation such as: movement of vacant taxis, taxi utilization for urban network and the passengers, origin-destination demand pattern. The model offers some interesting results in the equilibrium situation of taxi services and expresses some useful policies for decision makers. The results show that not only the average taxis performance and utilization is decreased significantly by the number of active taxis but also the growth of the taxis utilization has direct effect on increasing passengers, waiting time.