This document is a master's thesis from February 13, 2012 submitted to the Department of Integrated Information Studies discussing a study on the design of dial-a-ride bus systems. It formulates a model of a shared travel resources problem based on the Traveling Salesperson Problem and analyzes game properties through simulation experiments. It then focuses on comparing fixed-route and on-demand dial-a-ride bus systems in terms of user convenience, defined as average travel time, and ridership rates. The results show convenience and ridership rates do not always match between the two systems. The thesis concludes the evaluation should consider both average travel time and ridership rates.