Search

One of the most important challenges in urban design is planning an appropriate street network, satisfying the demand of users with different transport modes. Understanding the nature of road networks has been thoroughly studied problem for many years and extensive professional literature is now available in this respect. In this study, five different micro-districts and their road networks have been analyzed in Budapest. Therefore, this paper is aimed at providing a contribution to the knowledge of comparing road networks of different residential estates under different traffic loads. Moreover, significant similarities and differences were identified among urban street layouts in this paper. [ABSTRACT FROM AUTHOR]

Passenger car unit is an important comparison factor that helps the traffic engineer to describe the impact of heterogeneous traffic flows on the traffic performance of the infrastructure elements, compared to homogenous passenger car flows. The purpose of this study is to determine the passenger car unit value of certain vehicle types (e.g. buses, trucks) in signalized circular intersections. The values defined by the Hungarian standards are based on the weight and type of the vehicles, so it is important to know how these parameters of the vehicles influence the traffic conditions at this unique type of road junction, to be able to conduct a correct capacity calculation. PTV Vissim microscopic simulation program was used to model different traffic volumes and compositions getting by the recommended passenger car unit values for the application, and a proposal for further studies in subject. [ABSTRACT FROM AUTHOR]

Copyright of Der Moderne Staat is the property of Verlag Barbara Budrich GmbH and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Elektronik Industrie is the property of Hüthig GmbH and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The capacity of railway infrastructure often is in focus of transport policy issues. Already now a lot of lines and nodes are highly occupied. In order to handle the increasing traffic demand on rails, new and extended railway infrastructure is mandatory. The predicted traffic demands as well as the existing and prospective capacity of railway infrastructure are essential indicators for prioritising infrastructure projects. By using methods of railway operations, it is possible to calculate the available capacities, to identify existing bottlenecks and to evaluate measures to eliminate them. Mainly analytic calculation is used for capacity assessment, as it is possible to establish a relation between the utilisation of infrastructure and the quality of operation. The permitted waiting time is used as quality measure in this context. In the future economic criteria related to the expected costs and revenues should be taken into account next to the waiting times. However, currently the availability of needed input data is insufficient. If further research allows generalized, valid statements concerning this data, it would be possible to make more specific statements regarding the capacity of railway infrastructure. Therefore these results could lead to more delicate prioritised infrastructure projects. Furthermore the competitive situation between the different transport carriers at the transport market should be considered as well. [ABSTRACT FROM AUTHOR]

Copyright of Economic Policy Papers / Wirtschaftspolitische Blätter is the property of Wirtschaftskammer Osterreich and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)