Abstract
The Tokyo Metropolitan Area (TMA) has traffic congestion especially during peak commuting hours, in spite of having one of the densest railway networks in the world. It is, however, observed that there is a great variation in the number of passengers carried by individual links of the network. This means that the network is in an unbalanced state and may still have spare capacity in order to improve its current efficiency. On the other hand, it is known that the passengers-flow on the network is assigned by the level of railway services. Therefore, it will equilibrate the passengers-flow with the network, according to the influence of the level of railway services by strategic improvements. This study focuses on the unbalanced usage of railway network and proposes the railway network assignment system that is able to illustrate weak points. It also evaluates the level of railway services in order to use maximally the whole network.
