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Packaging Waste Research Responding to the Rise of Transport and Logistics Volumes during the Covid-19 Pandemic

Pečman Jan, Vrábel Ján, Mašek Jaroslav, Šedivý Josef, Stopková Mária, Bartuška Ladislav

Archiwum Motoryzacji

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2023

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Vol. 101, nr 3

50--66

EN

The management of packaging material and its transport flow, including waste management, has become the focus of attention in recent decades, not least because of the emphasis on the requirements of sustainable development. Due to ever-increasing volume various types of packages, i. e. coming not only from industrial production, transport and trade, where its management is regulated, organized and controlled, but also packaging waste that is generated in households and where this waste ends at best sorted into containers according to material and in the worst case as municipal waste, or it is used as fuel in the incinerator. Author´s team defined the research idea in the direction of packaging waste, coming from online shopping, logistics and shipment distribution. The research was conducted over the year 2021 in the Czech Republic, during the Covid-19 pandemic, when online shopping was on its rise and, for many people, it became as a partly substitute for regular shopping in the future. In regard to an analytical part of the research, specific empirical methods were applied. The research hypothesis is evaluated statistically using a pairwise test. The presentation of the research per se is preceded by a literature review with citations of legislative articles and scientific papers related to the topic discussed. This section is followed by a description of the paradox in terms of online trading. The next part of the article presents the research findings, their summary and related conslusions.

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Statistical Analyses of Selected Maintenance Parameters of Vehicles of Road Transport Companies

Caban Jacek, Droździel Paweł, Krzywonos Leszek, Rybicka Iwona, Šarkan Branislav, Vrábel Ján

Advances in Science and Technology. Research Journal

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2019

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Vol. 13, no 1

1--13

EN

The article presents the methods for preliminary statistical analyses of selected maintenance parameters of vehicles in road transport companies. The methodology was illustrated by presenting the results pertaining to the calculations of the maintenance intensity as well as the cost of parts and repairs of cars in the Lublin Regional Branch of the Polish Post Logistics Centre. These results provided comparative material useful in the evaluation of the maintenance efficiency of various road transport systems.

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The effects of vehicle load on driving characteristics

Rievaj Vladimir, Vrábel Ján, Synák František, Bartuška Ladislav

Advances in Science and Technology. Research Journal

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2018

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Vol. 12, no 1

142--149

EN

Many traffic accidents are due to an incorrect assessment of the current situation by the driver of the vehicle. With correct assessment of the situation, the driver has also to take into account a number of other factors. This article focuses on some of these factors such as the vehicle load, vehicle speed and curve radius. The first part of the article deals with the position of the vehicle center of gravity (CG), which has a major impact on the driving characteritics of the vehicle. The paper demonstrates the calculation of the maximum speed of a car model and truck model (without load and with load) when cornering. The center of gravity has an effect on the vehicle axles load distribution, and thereby on braking forces. This issue is dealt with in the second part of the paper. In the last part the calculation of the braking force as a function of the adhesion coefficient of the tires depending on the road surface is mentioned. The importance of the contribution consists in quantifying the impact of vehicle load on its driving characteristics.

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Measuring mechanical resistances of a heavy good vehicle by coastdown test

Skrúcaný Tomáš, Semanová Štefánia, Kendra Martin, Figlus Tomasz, Vrábel Ján

Advances in Science and Technology. Research Journal

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2018

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Vol. 12, no 2

214--221

EN

Mechanical resistance consists of rolling tire resistance and power losses of vehicle drive train. Rolling resistance is done by deformation of vehicle tires on road surface. Power losses represent resistances of bearings and wheels rolling and oil wading. This resistance acts continuously during vehicle wheels rotation. The value of this driving resistance is possible to test by different methods. Laboratory tests on rotating drum or dynamometer are usually used. This paper deals about rare method – coastdown exterior driving test. It was done with a casual truck trailer set. Results of this test method show the value of this resistance forces which are converted into a coefficient of mechanical resistance and discussed in the point of view of rolling resistance coefficient values.