Wyniki wyszukiwania - Biblioteka Nauki

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Prospects for the development of Zero- and low-emission vehicles in urban distribution systems in terms of the situation on the fuel market

100%

Murawski J. , Pryciński P. , Sierpiński G. , Jachimowski R.

Systemy Logistyczne Wojsk

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2022

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tom Vol. 57, no. 2

41--62

PL

W obecnych czasach problemy związane ze zrównoważonym transportem oraz ograniczeniem negatywnego oddziaływania na transportu stanowią istotny element agendy Unii Europejskiej. Jednocześnie na zwiększenie popularności pojazdów bezemisyjnych i niskoemisyjnych może mieć wpływ globalna sytuacja na rynku paliw kopalnych i rosnące ceny ropy naftowej. Ze względu na swoje cechy charakterystyczne, wykorzystanie pojazdów bezemisyjnych i niskoemisyjnych jest zasadne zwłaszcza w miastach, zarówno w transporcie indywidualnym, jak również w komunikacji miejskiej i w transporcie towarowym. W artykule skupiono się na analizie perspektyw dla wykorzystania pojazdów bezemisyjnych i niskoemisyjnych w systemach dystrybucyjnych (zwłaszcza w miastach). W związku z tym celem badawczym artykułu jest odpowiedź na pytanie: Jakie są przewidywane trendy w zakresie poziomu wykorzystania pojazdów bezesmisyjnych i niskoemisyjnych w systemach dystrybucyjnych? Hipoteza badawcza zakłada, iż: Poziom wykorzystania pojazdów bezemisyjnych i niskoemisyjnych w systemach dystrybucyjnych będzie rósł w najbliższych latach biorąc pod uwagę sytuację na globalnym rynku paliw. Do weryfikacji hipotezy wykorzystano takie metody badawcze jak: desk research (w tym analiza danych z rynku paliw) oraz krytyczny przegląd literatury. W artykule zbadano możliwość wykorzystania pojazdów dostawczych o różnej ładowności. Z przeprowadzonych badań wynika, że biorąc pod uwagę aktualne trendy na rynku paliw, w perspektywie najbliższych 5-10 lat koszty eksploatacji pojazdów bezemisyjnych oraz niskoemisyjnych staną się niższe od kosztów eksploatacji pojazdów konwencjonalnych, co będzie prowadziło do zwiększenia poziomu ich wykorzystania w miejskich systemach dystrybucyjnych.

EN

Nowadays, problems related to sustainable transport and limiting the negative impact on transport are essential to the agenda of the European Union. At the same time, the increase in the popularity of zero- and low-emission vehicles may be influenced by the global situation on the fossil fuel market and rising oil prices. Due to their characteristics, the use of zero- and low-emission vehicles is justified, especially in cities, both in individual transport as well as in public transport and freight transport. The article focuses on analysing prospects for using zero- and low-emission vehicles in distribution systems (especially in cities). Therefore, the research goal of the paper is to answer the question: what are the expected trends in the level of use of zero-emission and low-emission vehicles in distribution systems? The research hypothesis assumes that the level of use of zero- and low-emission vehicles in distribution systems will increase in the coming years, considering the situation on the global fuel market. Research methods such as desk research (including the analysis of data from the fuel market) and a critical literature review were used to verify the hypothesis. The article examines the possibility of using delivery vehicles with different load capacity. The research shows that taking into account the current trends on the fuel market, in the next 5-10 years, the operating costs of zero-emission and low-emission vehicles will become lower than the operational costs of conventional vehicles, which will lead to an increase in their use in urban distribution systems.

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Intelligent mobility : a model for assessing the safety of children traveling to school on a school bus with the use of intelligent bus stops

88%

Murawski J. , Szczepański E. , Jacyna-Gołda I. , Izdebski M. , Jankowska-Karpa D.

Eksploatacja i Niezawodność

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2022

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tom Vol. 24, no. 4

695--706

EN

The aim of the article is to develop a model for assessing the safety of children’s travel. Safety is the most important indicator describing the mobility system of children, even more important than the costs of operating it. Due to the dynamic development of intelligent solutions, it is possible to undertake additional activities supporting the improvement of children’s safety when traveling to and from school. However, their implementation requires an adequate assessment of a children’s mobility system. Currently, there are no solutions that could comprehensively support the decision-making process in this sphere. The article presents the issues of children’s mobility, a literature review in this area, mathematical model for assessing school bus travel, and a computational example. The presented approach is an original solution allowing for evaluation of the existing systems and their development scenarios. In addition, it enables the comparison of children mobility systems of different complexity and scale.

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Business environment of rail transport in the context of the value chain

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Krześniak M. , Jacyna M. , Pryciński P. , Murawski J. , Bańka M.

Zeszyty Naukowe. Transport / Politechnika Śląska

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2022

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tom z. 116

179--195

EN

The value chain can be defined as a set of all processes and procedures necessary to deliver a product or service to the end-user through various stages of development. A concept of the value chain is essential in the context of transport, as the transport process is usually one of the last elements of the value chain and determines the final value of a product or service offered. In recent years, the domestic and international rail transport market has undergone significant changes, including ongoing globalisation processes, growing importance of international trade, increase in intermodal transport significance, numerous investment outlays in transport infrastructure, means of transport, and the area of rail transport interoperability. All the above-described aspects have an impact on the value chain in transport. This paper presents an analysis of the value chain in transport processes in an aspect of rail transport. Elements of the railway transport organisation process, which affect the entire value chain, were briefly characterised in this article. Moreover, based on statistical data and a literature review, factors that fundamentally impact the efficient organisation of rail transport processes were identified.

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Selected vehicle emission assessment issues in passenger transport services

88%

Pryciński P. , Wawryszczuk R. , Korzeb J. , Pielecha P. , Murawski J.

Combustion Engines

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2023

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tom R. 62, nr 4

14--22

EN

The paper presents an analytical method for determining the pollutant emission of transport modes, based on emission indicators for various vehicle types and statistical data. The method developed enables the determination of the emission of various vehicle types without the need to carry out tests on real vehicles. The purpose of this paper is to compare the vehicle emission results obtained using the developed analytical method with the real-world results obtained in RDE tests based on a case study, i.e. an analysis of the emission of passenger transport modes in Warsaw. The paper contains a summary of the results of measurements and calculations, as well as an analysis of potential areas of application for the developed analytical method.