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1
Content available Comprehensive assessment methodology of the competitiveness of freight transport services
Yarashova Vasila, Hoshimov Abror
Transport Problems
|
2021
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T. 16, z. 1
187--198
EN
The strategic goal of development of the transport system is to meet the needs of socially oriented development of the economy and society in competitive high- quality transport services. The method of determining the competitiveness of freight transport services developed by the authors is based on the system of indicators for assessing the competitiveness of freight transport services and includes natural and cost indicators that collectively reflect the competitiveness of each operator's services for railway, airway and roadway networks.
2
Content available Input/output models for freight transport demand: a macro approach to traffic analysis for a freight corridor
Pompigna Andrea, Mauro Raffaele
Archives of Transport
|
2020
|
Vol. 54, iss. 2
21--42
EN
Input Output model are of great interest in the transport sector, especially regarding freight transport demand. These models allow to analyze the cross effects of: political, macroeconomic and transport changes; industrial dynamics; exchange flows between different sites within a reference area, more or less divided into subareas. Although very interesting and desirable to be used and disseminated, their use is often hindered by the complexity of the modelling structures that need to describe the interactions with the transport systems and by the difficulty of finding complete and reliable data. In this context, this paper deals with a macro-level Input Output approach for freight demand analysis, which directly relates the quantities of goods transported along a multimodal corridor to the functioning of the economic system. The proposed model is structured on two levels: the first level allows the sectoral production forecasts of the entire economic system based on the exogenous final demand; the second allows the forecast of tons transported, annually and by sector, along the corridor based on the sectoral production estimated at the first level. The two modelling levels are applied to the analysis and forecast of freight traffic demand along the Italian-Austrian cross-border stretch of the Brenner corridor, a fundamental axis of the European transport infrastructure network. The model has been verified and validated on data covering 15 years between 2000 and 2014 using the reclassified time series of Input Output tables and the international trade data for Italy. The model has been used to produce medium-long term forecasts for different economic scenarios. The macro-level point of view and the application for the corridor provide a simple and directly applicable model compared to the complex articulations that characterize the Input Output applications to the transport systems, which can hinder their concrete use as decision support in the planning of transport infrastructures.
3
Content available A structural decomposition analysis for traffic demand assessment on a freight transport corridor
Pompigna Andrea, Mauro Raffaele
Archives of Transport
|
2020
|
Vol. 56, iss. 4
19--31
EN
This paper deals with a Structural Decomposition (SDA) applied to the analysis of the freight traffic demand in an Input Output (IO) modelling context. After reviewing the basic definitions of IO models and some methodological references for their application in the freight transport field, the paper proposes the application of the SDA in the perspective of a freight corridor. This application takes place downstream of an IO model that directly relates the quantities of goods transported along the corridor with the functioning of the reference economic system. Considering the evolution of tons annually trans-ported in a certain time interval, the SDA model allows to isolate the specific effects related to: intensity of freight traffic typical of the corridor; technological structure of the production sectors; characteristics of the final demand in relation to its overall level, sectoral structure and allocation between components. The SDA model is applied to a case study considering the total volumes of goods annually in transit at the Brenner pass between 2000 and 2014. The evaluation of the polar forms of the multiplicative decomposition and their geometric mean allow to quantify the effects of each factor on the variation of the tonnage in terms of indexed value, absolute variation and percentage contribution compared to the base year (2000). The relative influences on freight traffic at the Brenner pass are therefore highlighted, both in terms of total volumes transited and impacts attributable to each of the decomposition factors introduced, with particular evidence also in the event of periods of economic and financial crisis. The SDA specified in the paper and the related case study provide useful elements for studying the traffic demand of goods through a freight corridor, helping in outlining the effects of the different driving forces related to the economic system and affecting freight transport demand trends.
4
Content available Modeling of the rail freight traffic by the method of economic-geographical delimitation in the region of the south-easter coast of the Baltic Sea
Chislov Oleg, Bogachev Viktor, Zadorozhniy Vyacheslav, Demchenko Oleg, Khan Vladimir, Bogachev Taras
Transport Problems
|
2019
|
T. 14, z. 2
77--87
EN
The results of further research on the creation of a mathematical model of railway freight traffic carried out in a regional transport and technological system are presented. The proposed logistic approach is applied to the issues of optimizing the management of transportation directed to ports located on the southeast coast of the Baltic Sea. Built on the basis of a comprehensive assessment of the transport infrastructure of the region under consideration and the performance of the operating company, the mathematical model provides ample opportunities to address issues of regulating of transportation. The method of economic and geographical delimitation of the ≪influence areas≫ of loading stations is significantly developed both in terms of using the geometric properties of higher order algebraic curves and in terms of a deeper approach to studying the transportation process. The results of the research can serve as one of the basis for improving the economic efficiency of the functioning of international transport corridors in the framework of multimodal transport.
5
Content available Economic–geographical method delimiting wagon flows in the region considered: model and algorithm
Chislov O., Bogachev V., Zadorozhniy Zadorozhniy., Bogachev T.
Transport Problems
|
2018
|
T. 13, z. 2
39--48
EN
The problem of effective management of the railway freight flows in the conditions of the multiplicity of operators requires the rationalization of the transportation process. The further development of the authors’ research on creating the mathematical model of the railway freight flows in the region transportation and technological system is presented. For the first time, the theory of algebraic curves of higher orders is used to create a territorial model of the oligopolistic market of freight traffic. The algorithm for creating a model of freight transportation is based on the analysis of the qualitative and quantitative indicators of the operator company in the considered region with the use of analytical, heuristic, and graphic capabilities of math software. The theoretical substantia-tion of the territorial picture, the freight transportation market in the region is obtained. The carried-out research allows to specify possible ways of optimization of freight traffic distribution.
6
Content available remote Nowe rozwiązania i układy w zmodernizowanej lokomotywie spalinowej typu 303Da serii ST46 do ruchu towarowego
Marciniak Z., Michalak P.
Pojazdy Szynowe
|
2013
|
Nr 2
44--49
PL
Artykuł jest poświęcony prezentacji nowych i modernizowanych układów, systemów, zespołów i urządzeń zastosowanych w modernizowanej lokomotywie spalinowej serii SU46 (po modernizacji ST46) przeznaczonej zasadniczo do prowadzenia pociągów towarowych. W artykule zaprezentowano charakterystyki trakcyjne i możliwości przewozowe lokomotywy oraz uzyskane parametry techniczne i eksploatacyjne lokomotywy oraz jej głównych zespołów i układów. Ponadto opisano nowe i zmodernizowane zespoły i układy oraz przedstawiono zakres zrealizowanych prób i badań stacjonarnych, ruchowych i eksploatacyjnych pozwalających na dopuszczenie jej do ruchu na torach PKP PLK S.A. Referat powstał w ramach zrealizowanego w 2011r. projektu celowego nr 6ZR 2009 C/07187 p.n. „Zmodernizowana lokomotywa spalinowa serii SU46 przystosowana do wymagań TSI obowiązujących w Unii Europejskiej” wykonanego przez Instytut Pojazdów Szynowych „TABOR” w Poznaniu i Pojazdy Szynowe „PESA” Bydgoszcz S.A.
EN
The article is devoted to the presentation of new and modernized sets, systems, assemblies and equipment used in the modernized diesel locomotive of series SU46 (after modernization of ST46) designed principally for the operation of freight trains. The traction characteristics and transport capacities of locomotive as well as the received technical and operational parameters of locomotive and its main units and systems are presented in this paper. Moreover, the new and modernized units and systems are described. The range of realized trials and stationary, moving and operating tests, that allow to permission for operation on PKP PLK S.A. railways, are presented. The paper was written as part of realized in 2011. target project No. 2009 C/07187 6ZR "“Modernized diesel locomotive SU46 series adapted to TSI requirements in EU”, made by Rail Vehicles Institute “TABOR” in Poznań and Pojazdy Szynowe “PESA” Bydgoszcz S.A.
7
Content available Infrastructure improvement as a means to railway transport development in Poland
Mendyk E.
Logistics and Transport
|
2010
|
Vol. 10, No. 1
9-17
EN
The paper presents railway freight traffic in 1950-2007 in comparison with other branches of transport as well as the prevalence of motor transport. Railway infrastructure improvement should be performed in a wider extent because it already fulfills clients' basic transportation demands. Implementing railway interoperability increases its competitive power on transportation services market.
8
Optymalizacja konstrukcji platformy kolejowej do przewozu ciężkich ładunków
Domagała M., Hawryluk M., Lisowski E.
Transport Przemysłowy
|
2008
|
nr 2 (32)
40-43
PL
Artykuł dotyczy problematyki przewozu ciężkich transformatorów z zakładów produkcyjnych lub remontowych do elektrowni transportem kolejowym. W referacie przedstawiono optymalizację konstrukcji wagonu 603Z, mającą na celu obniżenie masy wagonu przy zachowaniu parametrów wytrzymałościowych zgodnych z wymaganiami międzynarodowych norm kolejowych. Do wykonania analiz MES i optymalizacji wykorzystano program Pro/Mechanica, będący częścią zintegraowanego, parametrycznego systemu CAD/CAM/CAE Pro/ Engineer.
EN
The paper presents the results of optimization of the carrying structure of the railway car designed for higher than average cargo transport. To conduct FEM analyses Pro/Mechanica program has been used, which is a part of an integrated, parametric CAD/CAM/CAE Pro/Engineer packet.
9
Content available Sieci kolejowe z priorytetem dla ruchu kolejowego
Raczyński J.
TTS Technika Transportu Szynowego
|
2007
|
R. 13, nr 12
24-31
PL
Jedną z największych barier w rozwoju kolejowych przewozów towarowych w Europie jest niedostatecznie nowoczesna infrastruktura kolejowa oraz coraz częściej pojawiające się problemy wynikające z niewystarczającej jej zdolności przepustowej. Szczególnie istotnym zagadnieniem jest wzajemne zharmonizowanie ruchu pasażerskiego i towarowego. Docelowym rozwiązaniem tego problemu jest budowa nowych linii dużych prędkości dla ruchu pasażerskiego i organizacja sieci linii z priorytetem dla ruchu towarowego. O ile programy budowy nowych linii dużych prędkości w Europie są realizowane z konsekwencją od prawie 20 lat i z bardzo pozytywnymi rezultatami to problem budowy europejskiej sieci kolejowej dla szybkiego i taniego transportu towarowego dopiero w ostatnich latach został w zadowalający sposób poniesiony na forum instytucji unijnych.
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