As a regional strategy, it is very important for local cities that international flights are put into service to local airports and to increase tourists. It is problemati c for the airlines that their international flights are put into service directly between the local airport and the international airport since it is difficult for them to secure the number of passengers needed to operate the aircraft. Co ncerning 1-stop flights, there is a good possibility of securing number of passengers. Therefore, the study illustrated the possibilities of domestic airline flights by foreign airlines as international flights.

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 In Japan, the network of urban expressway has been expanding with the development of urban areas. However, the patrol systems in the urban expressway has not been operated on the basis of scientific evidence, but of conformity and experience. It is therefore crucial to efficiently operate such systems, not only to facilitate the rapid recovery of decreased expressway functionality, but also to acquire the income that supports the operation of privatized expressway companies. Therefore, we develop a multiagent simulation model consisting of the decision-making of four agents, including expressway company, highway patol company, road network users and road authority. These agents determines their schemes depending on their profit obtained. Results of the simulation identyfies the schemes that could offer the profits to the expressway companies in terms of the convenience of the users and the improvement of their operation.

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 In this paper, road transportation reliability on th e network level is considered . First, previous studies of connectivity reliability and vuln erability are reviewed. Next, stocha stic network equilibrium models, whose flows and travel times are stochastic, and simu lation techniques are classified, and their future works are pointed out. Th en, transportation policies and network design problems which increase or optimize the reliability are re viewed. Finally, a method of unified travel time and connectivity reliability assessment is proposed based on the review of this paper.

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 A public involvement (PI) process recently introduced into road planning and various infrastructure planning processes requires that public agency re presentative communicate with the public about planning information. Although many public and open house meetings are led by trained consultants and facilitators, public agency representative also frequently have the opportunity to communicate directly with citizens at such events. However, du e to a lack of communication traini ng, they may not be able to communicate ideas clearly to citizens. In this study, the authors analyzed the nature of public agency representative responses to citizen questions typically asked at a public meeting. As a result of this study, "good manner" was judged to be the most influen tial factor for a good evaluation by citizens and the presence or absence of the "technical terms" was judged to be the second most influential factor for citizens behind "good manner".Thus, public agency representative should convey information to citizens in a "good manner" and without using "technical terms" as described herein so as to discuss issues clearly. The findings of this study will promote better communication with citizens engaged in PI.

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 This paper is a case study about the Yahagi river basin, the greater part of which is located in the granite area. Hence, the sandy ground is dominated over the riverbeds and the alluvial lowlands along the Yahagi river. The sandy ground along the old Yahagi riverbeds had attacked by liquefaction during the past earthquakes, followed by their larger damages. Also, the old riverbeds and hinter-lowlands are easily suffered by inundation due to heavy rains.
 In this study, the old riverbeds and hinter-lowlands in the Yahagi river basin were picked up and analyzed through literatures and investigations, together with discussing their formation processes, and examining the disaster damages by liquefaction and inundation. As the results, it was found that, although the overflow risk from the main course of Yahagi river has been mitigated due to lowering the riverbed, countermeasures against drainage behind levees on tributary rivers became important issue. Moreover, the dangerous locations in detail due to earthquake and inundation were revealed, together with pointing out that the disaster danger area was increasing alon g with land development, and also the retarding basins are required along the area of old riverbeds and old hinter-lowlands in the Yahagi river basin.

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