Modem urban and regional traffic and transport planning has to be carried out according to a sophisticated planning process. It must be goal-oriented. The main goals should be the reduction of private car traffic and the operation of the remaining car traffic compatibly with social and environmental conditions but also the improving of accessibility and the ensuring of cost-effective operating of traffic and transport. There are goals' conflicts.
Urban and regional traffic and transport planning has to be performed in two different ways on two different levels of planning. All measures for improving the traffic and transport situation have to form a bundle, in which the measures of traffic and transport management play a decisive role.
Some new developments demonstrate the current fields of activity of urban and regional traffic and transport planners.

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This study concerns the application of a disaggregate modal-split model in the persontripsurvey. In particular, this study forcuses on the determination of (1) the choice set for individual pair of zones, and (2) a method for estimating the trip-length of substitutable models. With respect to the aggregate process, Naive and Classification methods are unable to accountfor probabilistic aspcts of the disaggregation process. This paper proposes an Integrationmethod on the aggregation process.

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This paper shows an estimation model for day-to-day dynamics of road network flows using partly observed link traffic counts. A least square type model for OD estimation is extended and daily traffic volumes on unobserved links in a network are estimated through a linear mapping of observed link traffic volumes. When some of the links on a network are ceaselessly observed, those data are used for estimating and predicting day-to-day fluctuation of link traffic volumes over the network. The time reliability indexes of the network are formulated using the provided day-to-day fluctuations of link traffic. These models are calculated for observed day-to-day link traffic data in Matsuyama city. The model is available for describing traffic volume on unobserved links and day-to-day fluctuations of link traffic flow over the network.

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Recent economic situations have caused huge increase of international air passengers in Japan. It is supposed that the demand structure has also changed in past ten years. We have developed some demand models for the international air transport policy analyses, however, longitudinal analysis for the recent demand has not been done. The purpose of this study is to analyze the structural change of the international passengers by multi-point data. First, departure airport choice model is calibrated and the structural changes are examined from a comparison with estimated parameters. Second, we develop trip generation model including accessibility variable and analyze the characteristics of the accessibility variable. Then we examine the result of these models, and it is shown that the accessibility has became significant factor for airport choice and trip generation. Finally, we discuss the future air transport policy briefly.

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Genetic Algorithms (GA) include generally three genetic operators, selection, crossover and mutation. The lack of dependence on function gradients makes it more suitable to such problems, like as discrete optimization design problems and optimization design problems with nonconvexities or disjointness in design space. The method is tried to apply to the determining priority of urban road improvement in this paper. The results suggest that GA is more effective for the optimization of large size road networks.

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The study revealed the changes in possibility of mutual access between all prefectural capitals in Japan. We considered five points of time, since the Meiji era. In this process, the concept of the possible staying time has been referred to, instead of commonly used indices, to take into account the feature of inter city mutual access, such as frequent services and conveniences of transfer.
As the result, it can be noted that the differences in inter city accessibility between developed districts and those not had apparently widened, during the ages of development, construction and other improvements in transportation facilities. Also, it shows that as these improvements in transportation facilities expand nationwide, the differences in accessibility tend to diminish.

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This paper proposes a computable dynamic input-output model to examine interactions between knowledge accumulation and economic development with endogenous technical change. The model explicitly introduces new sectors called knowledge sectors into the traditional dynamic input-output economic system. It is assumed that the growth of knowledge is the main source of technical change. The first part of the paper describes the micro-economic foundation of our model, whose framework is the adjustment-cost model of investment, knowledge and factor demands. The second part contains the empirical specification of the firms' micro-behavior and an input-output description of multi sectorial interactions between outputs, knowledge, and factor inputs.

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To keep good riding quality, it is necessary to construct MAGLEY guideway to a high level of accuracy. In this paper we formulate the relation between construction accuracy, power spectral density of guideway irregularity and riding quality level based on the “Riding quality-influence coefficient” which decided by construction unit length, vehicle velocity and vehicle vibration peculiarity. Finally we propose the meothod to decide construction accuracy taking the riding quality into consideration.

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This paper presents a look at dynamic user optimal traffic assignment as a time-delay optimal control problem. The approach proposed here allows us to develop a model for solving the predictive and dynamic user optimal assignment problem which is capable for considering both time-delay effects in the dynamic of link traffic flow and the information providing process to travelers.

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The objectives of the present study are, with regards to land-use and transport including environment, to investigate present situations, to identify issues in the planning and implementation stages, and lastly, to propose subjects to be tackled in order to realize “integrated planning and implementation” of “integrated land-use and transport” in developing metropolises. Following intensive investigations for the cases of the South-East Asian metropolises, the interaction structure is represented as a system which contains markets and governmental agencies. Pigeonholes are then set up to identify issues from the two viewpoints of “land-use and transport” and “planning and implementation”. The identified key issues are further examined from various viewpoints.

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A pay-back period method used for transportation project evaluation in Vietnam is characterized by some principal disadvantages and may result in an incorrect rank of alternatives and subsequently in irrational decision making. Despite of these, it may be used, after some modification, as rough evaluation means. Under recent economic reform, standard evaluation methods have started to be used. It faces a lot of issues. An attempt is given in this research to introduce some appropriate techniques to overcome these issues.

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