Search results for "ILW"

Assessing the Open Trenches in Screening Railway Ground-Borne Vibrations by Means of Artificial Neural Network

2009

Reducing ground borne vibrations in urban areas is a very challenging task in railway transportation. Many mitigation measures can be considered and applied; among these open trenches are very effective. This paper deals with the study of the effect, in terms of reduction of vertical and horizontal displacements and velocities, of the open trenches. 2D FEM simulations have been performed and several open trench configurations have been analysed varying the main geometric features such as width and depth, distance from the rail, thickness of the soil layer over the rigid bedrock, type of the ground, ratio between the depth of the trench, and the thickness of the soil layer. For quantifying t…

Study of the effectiveness of the open trenches in reducing railway ground-borne vibrations: sensitivity analysis of its geometric features using art…

2009

Problematyka przejmowania infrastruktury kolejowej przez samorząd terytorialny – przykład województwa dolnośląskiego

2021

Regionalny kolejowy transport pasażerski w ostatnich latach dotknięty był zmianami w kontekście organizacji przewozów. Dotyczy to kwestii zarządzania oraz zasięgu obsługiwanej sieci kolejowej. Zauważalne są tendencje do reaktywacji połączeń oraz tworzenia nowych powiązań komunikacyjnych. Jest to związane zarówno z obsługą aglomeracji miejskich, jak i transportu regionalnego. Proces kreowania nowego układu komunikacji kolejowej oparty może być na reaktywacji nieczynnych tras albo budowie nowych połączeń. Procedura przejmowania niewykorzystywanych linii przez samorząd województwa jest elementem odtwarzania pierwotnego systemu kolejowego. Z jednej strony pozwala to na zachowanie infrastruktury…

Cost that is Directly Incurred as a Result of Operating the Train Service on the 1520 mm Rail with Primarily Freight Transportation

2016

AbstractUnder the Directive 2012/34/EU (21 November 2012) “the charges for … [rail] infrastructure … shall be set at the cost that is directly incurred as a result of operating the train service”. This charging rule is new for Baltic States’ railways, where due to the favorable geographic position a full cost application without detalization was possible. Although, a big number of relevant studies on the issue was made in EU, all of them covered only 1435mm railways with primarily passenger transportation. This study has been made in order to understand the impact of train operating on 1520mm rail infrastructure with primarily freight transportation.A gradual model of infrastructure chargin…

Spatial conflicts betweem modernizations of railway lines and natural values A case study of Poznań - Szczecin railway line

2017

One of the most intensive processes in the development of Polish transport infrastructure is currently modernizing main national railway lines. One of them is the railway line between Poznan and Szczecin. During the realization of such projects there occur conflicts in fulfilling different ecosystem functions by landscapes. On the basis of the theory of ecosystem services these conflicts should be solved, and potential projects – optimized. The study evaluates natural values of the areas adjacent to the railway line Poznań - Szczecin within a zone of 250 m, and also identifies areas with varying conflict degrees for the realization of the modernization project. The most important areas of h…

Automated Railway Signs Detection. Preliminary Results

2019

Abstract Nowadays safety in railways is mostly achieved by automated system technologies such as ERTMS/ETCS. Nevertheless, on local railways (suburban and regional lines) several tasks still depend on the choices and actions of a human crew. With the aim to improve safety in such type of railways, this research proposes a system for the automatic detection and recognition of railway signs by means of the digital image processing technique. First field applications, carried out on the Italian railway network, show that the proposed system is very accurate (the percentage of correctly detected railway signs is about 97%), even at high train speeds.

La regolazione indipendente del settore ferroviario

2020

The wide regulatory power of the Independent Transport Authority on the railway sector. The National Independent Authority for Transport, imposed by European Law and established in Italy in 2013, is characterized by using wide powers of control, regulation and sanction, which cover all transport sectors. Regulatory competences seem in particular to interfere, in some areas, with the functions, also of political direction, of the State, Regional and Local Government, as well as the competences of the other administrative independent bodies such as the National Antitrust Authority or National Anti-Corruption Authority. This requires the provision of forms of coordination and cooperation beetw…

Linie kolejowe w Opolskiem ze szczególnym uwzględnieniem procesów ich modernizacji i likwidacji

2020

Kierunki modernizacji sieci kolejowej

2017

Opracowanie przedstawia kierunki modernizacji sieci kolejowej Polski w latach 2003-2017. Długość sieci kolejowej w kraju ulega zmniejszeniu. Zachodzi proces likwidacji linii i zawieszenia przewozów kolejowych. W kraju modernizowane są główne linie magistralne. Na modernizację składają się: wymiana torów, przebudowa trakcji elektrycznej i wprowadzenie nowoczesnych systemów sterowania ruchem i sygnalizacji (ECTS). Przebudowie ulęgają linie kolejowe o znaczeniu tranzytowym zaliczane do europejskiego układu połączeń kolejowych w ruchu pasażerskim (umowa AGC) i towarowym (umowa AGTC). Projekty modernizacji linii kolejowych są finansowane ze środków europejskich i krajowych. Główne źródła finanso…

LCA of Different Construction Choices for a Double-Track Railway Line for Sustainability Evaluations

2023

The international commitment to achieve carbon neutrality in the next few decades has oriented human activities towards the preservation of natural and non-renewable resources. In this context, a great research effort has been devoted to the search for sustainable solutions for the infrastructure construction sector, based on a thorough assessment of the environmental impact (EI). In this regards, Life Cycle Assessment (LCA) is considered one of the main components of Environmental Impact Assessment (EIA) and, for a comprehensive analysis, all the costs incurred by stakeholders during the useful life of the infrastructure should also be taken into account, applying the Life Cycle Cost (LCC)…