Analysis of Selfish Behaviors on Door-to-Door Transport System
The selfishness of people sometime degrades the performance of systems in which resources are shared among people. One of the typical examples is a door-to-door transport system. The door-to-door transport system adopts a flexible style of transportation, different from traditional transport systems such as buses and taxis. In the system, several customers ride one transport vehicle all together, and the share-ride transport vehicle visits from door to door. The selfishness of customers may cause the delay of arrivals and the decrease of benefits. However, it is difficult to control the selfishness of people because of their inherent competitive behaviors. Therefore, in this paper we analyze the selfish decision-making processes in the door-to-door transport system on the basis of game theory. The profit relation among people reaches an equilibrium called Nash Equilibrium. However, the equilibrium relation is not optimal for the system in many cases. Therefore, we also show that the degradation of the system resulted from the selfish behaviors can be avoided by changing parameters of the system such as the number of vehicles.
KeywordsTravel Time Nash Equilibrium Transport System Latency Function Equilibrium Relation
Unable to display preview. Download preview PDF.
- 1.Koutsoupias, E., Papadimitriou, C.H.: Worst-case equilibria. In: Proceedings of the 16th Annual Symposium on Theoretical Aspects of Computer Science, pp. 387–396 (1999)Google Scholar
- 2.Roughgarden, T., Tardos, E.: How bad is selfish routing? In: IEEE Symposium on Foundations of Computer Science, pp. 93–102 (2000)Google Scholar
- 3.Roughgarden, T.: The price of anarchy is independent of the network topology. In: Proceedings of the 34th ACM Symposium on the Theory of Computing, pp. 428–437 (2002)Google Scholar
- 4.Ohta, M., Shinoda, K., Noda, I., Kurumatani, K., Nakashima, H.: Usability of demand-bus in town area. Technical Report 2002-ITS-11-33, Technical Report of IPSJ (in Japanese) (2002)Google Scholar
- 5.Noda, I., Ohta, M., Shinoda, K., Kumada, Y., Nakashima, H.: Is demand bus reasonable in large scale towns? Technical Report 2003-ICS-131, Technical Report of IPSJ (in Japanese) (2003)Google Scholar
- 6.Harano, T., Ishikawa, T.: On the vakidity of cooperated demand bus. Technical Report 2004-ITS-19-18, Technical Report of IPSJ (in Japanese) (2004)Google Scholar
- 8.Wardrop, J.: Some theoretic aspects of road traffic research. In: Proceedings of the Institute of Civil Engineering, vol. 1, pp. 325–378 (1952)Google Scholar