Wyniki wyszukiwania - Biblioteka Nauki

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Public transport as a part of shared economy

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Kalašová A. , Harantová V. , Čulík K.

Archiwum Motoryzacji

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2019

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tom Vol. 85, nr 3

49--56

EN

Nowadays, the issue of sustainable mobility is very resonant in the professional public. Main topic for discussion is a transport as a one of the biggest polluters in the world. Today's transport brings a number of benefits to society, but often it has a high price. This price is paid by wasted human lives and serious environmental damage. Therefore there is no wonder that a number of cities, municipalities and regions regard transport as the key to their development, but at the same time as a threat to the health of the population, their safety and quality of a whole life. The combination of public and shared transport is necessary for clean and smart mobility. Shared economy is a concept of social change in the 21st century. This paper is focused on above mentioned issues. It describes levels of the smart city concept and principles and forms of shared economy in transport and shared mobility.

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Traffic Modelling of the Circular Junction in the City of Žilina

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Čulík K. , Harantová V. , Kalašová A.

Advances in Science and Technology. Research Journal

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2019

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tom Vol. 13, no 4

162--169

EN

Nowadays, a high-quality road network is necessary for sustainable transport systems. A sharp rise in automation results in increased transport problems. The most serious problems include the traffic infrastructure congestion, congestion, and increased risk of a traffic accident and, of course, a negative impact on the environment. The mobility of inhabitants and the transport of goods are one of the key transport objectives. A junction still constitutes the most critical point on the road network. That is why crossing the road smoothly and safely makes a large difference for the vehicle. This article provides an analysis of the current state of the selected circular junction. On the basis of the conducted survey, new solutions for this junction were presented, which should prevent the traffic conditions from becoming obtrusive. The Aimsun microsimulation was performed for checking the new proposals.

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Traffic modeling of intersections on vajnorská street in Bratislava

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Hájnik A. , Harantová V. , Kalašová A. , Čulík K.

Transport Problems

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2021

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tom T. 16, z. 3

29--40

EN

This article focuses on traffic modeling of intersections in Aimsun. The intersections studied are in Bratislava, the capital of Slovakia. Every year, the number of vehicles on roads increases and congestions are created. Individual intersections do not have unlimited capacity. Simulations help to predict possible future problems and thus the possibility to prevent them. Accordingly, at intersections on Vajnorská street, a traffic survey was carried out using video cameras. Then, simulations were carried out in Aimsun. The results are shown in the tables separately for each intersection along with the determined overall quality level of the intersection. In addition to the current situation, simulations were carried out for increased traffic by 10% and 20%, and overall quality levels were also determined. Finally, the results were evaluated and compared with each other. This article points out the importance of research into the permeability of important points of the road network: intersections. It is necessary to carry out capacity assessments when planning any construction that will affect traffic in each location.

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Identification of places with deteriorated air quality in city of Žilina in relation to road transport

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Šarkan B. , Loman M. , Harantová V.

Archiwum Motoryzacji

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2023

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tom Vol. 102, nr 4

68--90

EN

The aim of the research is to identify places with deteriorated air quality in the selected city. After an analytical analysis of the data, it is possible to propose steps that can be used to actively contribute to the reduction of air pollution, especially due to road traffic. Places where deteriorated air quality was identified were identified on the basis of practical measurements. Given that the measurement route was designed in a built-up area of the city with a large number of pedestrians, the research was primarily focused on the identification of particulate matters (PM) and the concentration of carbon monoxide CO. The measurements were performed repeatedly on a pre-defined route. The measurements were carried out repeatedly during the morning rush hour when traffic was congested on the roads. Based on the processing and evaluation of the measurements, the sections where increased values of individual emissions were recorded were determined. In this way, it is possible to precisely identify places where air quality deteriorates. The research conclusions provide support for planning the optimization of air quality management policies towards the creation of sustainable cities. The research results present the possibilities of identifying problematic sections from the point of view of emissions production. Critical places with regard to the production of emissions can be connected to places where a permanently increased movement of vehicles is observed.