scholarly journals Control of air pollution caused by vehicular emissions

2018 ◽  
Vol 245 ◽  
pp. 12001
Author(s):  
Eliza Gumerova ◽  
Olga Gamayunova

Dispersion of air pollutants is caused often by vehicular emissions. It is necessary to define correctly parameters, which influence on emissions. In this article analysis of the parameters and calculations of Saint-Petersburg roads are shown. According to results, measures to improve the air state are defined. Solving of this ecological problem is implementation of development programs of urban public transport, the use of fuel with improved environmental characteristics, the development of electric modes of transport, traffic management methods to increase the capacity of the road and road network in the city.

2021 ◽  
Vol 13 (12) ◽  
pp. 2329
Author(s):  
Elżbieta Macioszek ◽  
Agata Kurek

Continuous, automatic measurements of road traffic volume allow the obtaining of information on daily, weekly or seasonal fluctuations in road traffic volume. They are the basis for calculating the annual average daily traffic volume, obtaining information about the relevant traffic volume, or calculating indicators for converting traffic volume from short-term measurements to average daily traffic volume. The covid-19 pandemic has contributed to extensive social and economic anomalies worldwide. In addition to the health consequences, the impact on travel behavior on the transport network was also sudden, extensive, and unpredictable. Changes in the transport behavior resulted in different values of traffic volume on the road and street network than before. The article presents road traffic volume analysis in the city before and during the restrictions related to covid-19. Selected traffic characteristics were compared for 2019 and 2020. This analysis made it possible to characterize the daily, weekly and annual variability of traffic volume in 2019 and 2020. Moreover, the article attempts to estimate daily traffic patterns at particular stages of the pandemic. These types of patterns were also constructed for the weeks in 2019 corresponding to these stages of the pandemic. Daily traffic volume distributions in 2020 were compared with the corresponding ones in 2019. The obtained results may be useful in terms of planning operational and strategic activities in the field of traffic management in the city and management in subsequent stages of a pandemic or subsequent pandemics.


2019 ◽  
Vol 8 (6) ◽  
Author(s):  
Polina A. Buyvol ◽  
Gulnara A. Yakupova ◽  
Irina V. Makarova

The transport system plays an important role in human activities and is an integral part of the successful functioning of the urbanized area. The increasing degree of provision of urban residents with transport services should at the same time keep the environment environmentally friendly and sustainable over time. The article is devoted to the issues of ensuring the rational functioning of the city transport system based on the development and implementation of an intelligent road infrastructure management system, the intellectual core of which are simulation models of problem areas of the road network. The objective of the study is the development of tools for organizing traffic in the conditions of the rapid growth of the fleet of vehicles. Research tasks were to analyze the research in the field of traffic management, to consider methods to reduce and prevent traffic jams on roads in general and in individual sections in particular. The following research methods were used: methods of system analysis, methods of modeling traffic flows, simulation, computer experiment. Achievements: the developed simulation model can be used to conduct a computer experiment in order to select the optimal parameters for the functioning of traffic lights on a specific section of the road network of the city of Naberezhnye Chelny


2020 ◽  
Vol 8 (8) ◽  
pp. 82-99
Author(s):  
Madinah Nabukeera

Kampala is a government seat and the capital city of Uganda. Kampala has been referred to as an executive slum due to its breakdown in service delivery. Currently the city is facing increased population growth, increased demand for services, changing consumptions, rising income which has caused urbanization that resulted into increased solid waste generated. While Kampala has a lot of challenges i.e., garbage, potholes, sewer service, construction, traffic management, corruption, health services, environment, stray livestock and management of markets. The main objective of this papers was to investigate service delivery during the recentralization of the city in line with garbage tonnage. Secondary data from Lubaga division used with content analysis to analysis the collected data. Results indicated that a small number of trips and fuel consumption in December compared to October and November 2016. The fall in trend of garbage collected could be as a result of some measures like burning which are adopted by some households in Rubaga division. It is also believed that some KCCA garbage vehicles remain on the road sides and this would make it hard for some people who are far from the road to bring their garbage.


Author(s):  
Roman V. Andronov ◽  
◽  
Evgeny E. Leverents ◽  

The article discusses the issues and results of the use of statistical modeling (one of the types of simulation modeling, the so-called "Monte Carlo" method), to assess the effectiveness of traffic management on the example of the Timofey Charkov st. and Verkhnetarmanskaya st. intersection, located in the city of Tyumen. The results are based on the length of the vehicle queue and traffic delay time for one car in the scenario of widening the intersection’s carriageway and/or the implementation of the adaptive regulation for traffic flows. The calculations were carried out in the "SmartAdaptive+" program developed by the authors, and designed for a technical and economic assessment of the effectiveness of traffic management measures and the use of adaptive regulation and measures to change the road network nodes configuration.


2022 ◽  
Vol 14 (2) ◽  
pp. 131-139
Author(s):  
Igor Khitrov ◽  
◽  
Mykhailo Krystopchuk ◽  
Oleg Tson ◽  
Oleg Pochuzhevskiy ◽  
...  

The main task in ensuring the appropriate level of organization of traffic on the street and road network of cities is to minimize traffic delays, increase traffic safety, provide transport and pedestrian communication between the planning elements of the city. Problems caused by the deterioration of the street and road network significantly affect the work of the entire transport complex of the city. Significant traffic delays, congestion, characterized by increased travel time, deterioration of transport services, increased pollution of urban environment due to increased emissions and noise, increasing the number of road accidents indicate the inconsistency of the road network of cities to the modern level of motorization. To ensure the required capacity of the elements of the road network, there is a need to create appropriate road conditions, namely the construction of new and reconstruction of existing engineering structures and elements of streets and roads. However, addressing these issues may not always improve the performance of the entire network, as, in parallel with technical measures based on the construction and reconstruction of transport infrastructure, the application of effective traffic management measures to manage traffic in urban areas should be addressed streets. When creating conditions for optimizing the operation of regulated intersections, it is necessary to take into account the technical condition of vehicles, road conditions and the condition of the road surface. One of the main tasks of any traffic organization is to increase the capacity of intersections and reduce vehicle delays, ie the passage of traffic lights with minimal delay. To solve the problem of congestion of the street and road network of the city is to increase the efficiency and use of coordinated management of traffic and pedestrian flows, improving the operation of traffic lights. To implement the introduction of coordinated traffic light regulation, or the so-called green wave, it is necessary to establish the intensity and composition of traffic flows, the capacity of the elements of the road network and the modes of operation of traffic light facilities. The paper considers the results of the study of the impact of coordinated traffic management in the central part of Rivne on reducing traffic delays when passing intersections by vehicles and proposed technical solutions to improve road safety by equipping intersections with additional technical means of traffic control.


Author(s):  
András Szele ◽  
Lajos Kisgyörgy

Managing the congestion is an old and legitimate claim of the cities. However, in spite of the promising solutions, the use of passenger cars outside the city centers did not decrease. The still hot topic requires a real solution.The goal of the traffic planning and management was to serve the traffic demands but with the increase in traffic, infrastructure development could not keep up, so this goal - theoretically - is not valid anymore. We are in the midst of a paradigm shift: the old goals are obviously not working, but new goals and the tools needed to achieve them have not yet been developed.According to the presented research, the operation of urban-suburban rush hour congestion radically differs from the way we have assumed so far, so a new framework was developed that describes this traffic operation. This framework allows us to look for new and valid management solutions and set new strategic and operational goals. In this paper, it is proposed not to build infrastructure for traffic demands, but to adapt the traffic demands to the infrastructure, by creating the optimal saturated traffic flow. This will prevent negative traffic dynamics and impacts on the network and provide higher quality and a more reliable road network operation. The research results have led us to theoretical questions such as the right of the limitation of the free routing on the road network.


In modern era, due to increase in traffic in the city, emergency vehicles take more time to reach the destination. The current, time-based traffic management system is not suitable and also not flexible for present day traffic, especially at the intersection where the traffic needs to be controlled for vehicles from all four directions. To solve this problem, we bring users a sound detector with automatic recording of various vehicle sounds and distinguishing the presence of ambulance in a particular lane by detecting the siren sound. The captured ambulance sound is processed using IOT and sent to the traffic pole to enhance the traffic clearance. This is carried out by placing the sensors in each lane and a sensor near the traffic pole to indicate that the ambulance has crossed the lane. In this method the traffic signal controller decides when the vehicle has to cross the road and also provide importance to the emergency vehicle.


Author(s):  
Артемова ◽  
A. Artemova ◽  
Муравьева ◽  
N. Muravyeva

In the article, the problem of congestion, the main causes of delays and congestion on the road network of the city, presents an analysis of methods to combat congestion and risk assessment models of their occurrence, according to the service marked the busiest streets of the city. Thus, the analysis carried out in the article, enhances the effectiveness of traffic management of the city


Author(s):  
V.P. Sidorov ◽  
P.Yu. Sitnikov

One of the most important components of the territorial socio-economic complex of a city (especially a large one) is the system of urban passenger transport, which, in turn, consists of two subsystems: urban public transport and personal vehicles. In 2000-2020. many large and medium-sized cities in Russia are going through a period of active motorization. Izhevsk is no exception in this regard. The level of motorization of the population has been increasing in recent years both in the city and in the Udmurt Republic as a whole. There is a growing need to reduce the flow of personal vehicles towards more active use of public transport. Urban public transport (for all its significant scale) has, as a rule, 2-3 owners and therefore is largely manageable, which cannot be said about personal vehicles. It is not possible to force car owners to switch to public transport by order. But it is possible to create such conditions when the resident himself does not use his own car, but gives preference to public transport. For example, to organize the work of a single parking space, in which the placement of paid parking lots will make it unprofitable to visit many of the most attractive objects (especially in the central part of the city) by private vehicle. An example of such relevant work is shown in the proposed article. By order of the Administration of Izhevsk, the authors of the article have identified the most optimal locations for paid car parks. The choice was determined based on the results of step-by-step work to assess: the location of the potential of Izhevsk public transport, the intensity of traffic flows, the density of the population, the availability of existing parking areas, points of attraction for vehicles.


2017 ◽  
Vol 13 ◽  
pp. 53-61
Author(s):  
Wojciech Kiljańczyk

The article concerns the mechanisms of entrepreneurship development in partnership with local government, science and business. The author presents evidence that the sector partnership is crucial for the success of projects developing entrepreneurship in the local and regional perspective. Local government has the resources and capabilities to act as initiators of projects and programs supporting the economic development of the city or voivodeship. At the same time, representatives of local government units must use appropriate operational and management methods in the implementation of the policy of strengthening entrepreneurship. Inter-sectoral collaboration requires the application of organisational solutions allowing for the involvement of units in different fields and basing on various legislation. The author also indicates that the source of the competitive advantage of cities and regions may be the specialisation, as well as the commercialisation of knowledge and technology. In this case, the inter-sectoral partnership is crucial as it conditions the success of economic development programs in its social, economic and political sense. At the same time, the article describes the methods of building the inter-sectoral cooperation. As a basis for the appropriate use of the different potential of the cooperating participants, the authors indicated projects and programs embracing groups of projects. All this is worth being recognised within the framework of strategic documents, such as development plans, strategies, and other records used by local government agencies. The article uses the outcome of the participatory workshops during the preparation of the Rybnik Enterprise Development Program. The aim of the study is the verification of the assumption that the sectoral partnership is crucial to the processes of local and regional entrepreneurship development.


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