RATIONALE FOR ACCOUNTING LUNCH BREAK IN INVESTIGATIONS OF FUNCTIONING OF CONVEYING TRANSPORT SISTEMS OF GOODS IN URBAN TRANSPORT

Author(s):  
Витвицкий ◽  
E. Vitvitskiy ◽  
Хорошилова ◽  
E. Khoroshilova

It is known that motor transport process is influenced by random factors. To understand how we can take this into account when planning the impact of freight in urban areas need to perform studies to establish the existence of the impact of random factors in the results of the motor systems of transportation of goods. The article presents the results of investigation of technical secondary speed change under the influence of random factors on the functioning of conveying road transport system and the necessity of taking into account the lunch break in such studies.

2018 ◽  
Vol 19 (6) ◽  
pp. 57-61
Author(s):  
Piotr Bojar ◽  
Robert Znaczko ◽  
Wiktoria Znaczko

The working conditions of drivers have a direct impact on the safety of the tasks being performed. It is particularly noticeable in urban areas with increased traffic and certain limitations resulting from the condition of the infrastructure. Among the factors causing changes in drivers' behavior are the anthropotechnical factors resulting from the actions of people in the vehicle and its surroundings, external ones resulting from the impact of weather conditions as well as the condition of the infrastructure and work resulting from the operation of the means of transport. The paper attempts to identify and assess the impact of external and antropotechnical factors on the security of the transport process.


2020 ◽  
Vol 32 (6) ◽  
pp. 863-873
Author(s):  
Branimir Maretić ◽  
Borna Abramović

The planning and organisation of public passenger transport in rural areas is a complex process. The transport demand in rural areas is often low, which makes it hard to establish and run a financially sustainable public transport system. A solution is integrated passenger transport that eliminates deficiencies and provides benefits for all participants in the public passenger transport process. This paper describes the impact of integrated passenger transport on mobility in rural areas and critically evaluates different literature sources. Integration of passenger transport in urban areas has been described in the context of rural areas, and the challenges of integration of public passenger transport specific to rural areas have been analysed. Through the application in urban and rural areas, the planning of integrated and non-integrated passenger transport has been functionally analysed. The analysis found an increase in the degree of mobility in the areas that use integrated passenger transport compared to the non-integrated one. This research of the literature review has identified the rural areas of mobility as under-researched. The mobility research can set up a more efficient passenger transport planning system in rural areas.


2011 ◽  
Vol 48-49 ◽  
pp. 1073-1076 ◽  
Author(s):  
Min Zhang ◽  
Tao Yu ◽  
Guo Fang Zhai

The paper analyzes the characteristics of an intelligent transportation system (ITS) to explore the impact on urban transport of the ideas from “the Internet of Things (IOT)” before its official appearance, and further outlook for the driving force from smart traffic guided by IOT.


2017 ◽  
Vol 17 (6) ◽  
pp. 4131-4145 ◽  
Author(s):  
Guannan Geng ◽  
Qiang Zhang ◽  
Randall V. Martin ◽  
Jintai Lin ◽  
Hong Huo ◽  
...  

Abstract. Spatial proxies used in bottom-up emission inventories to derive the spatial distributions of emissions are usually empirical and involve additional levels of uncertainty. Although uncertainties in current emission inventories have been discussed extensively, uncertainties resulting from improper spatial proxies have rarely been evaluated. In this work, we investigate the impact of spatial proxies on the representation of gridded emissions by comparing six gridded NOx emission datasets over China developed from the same magnitude of emissions and different spatial proxies. GEOS-Chem-modeled tropospheric NO2 vertical columns simulated from different gridded emission inventories are compared with satellite-based columns. The results show that differences between modeled and satellite-based NO2 vertical columns are sensitive to the spatial proxies used in the gridded emission inventories. The total population density is less suitable for allocating NOx emissions than nighttime light data because population density tends to allocate more emissions to rural areas. Determining the exact locations of large emission sources could significantly strengthen the correlation between modeled and observed NO2 vertical columns. Using vehicle population and an updated road network for the on-road transport sector could substantially enhance urban emissions and improve the model performance. When further applying industrial gross domestic product (IGDP) values for the industrial sector, modeled NO2 vertical columns could better capture pollution hotspots in urban areas and exhibit the best performance of the six cases compared to satellite-based NO2 vertical columns (slope  =  1.01 and R2 = 0. 85). This analysis provides a framework for information from satellite observations to inform bottom-up inventory development. In the future, more effort should be devoted to the representation of spatial proxies to improve spatial patterns in bottom-up emission inventories.


2021 ◽  
Vol 13 (22) ◽  
pp. 12630
Author(s):  
Rolandas Vitkūnas ◽  
Renata Činčikaitė ◽  
Ieva Meidute-Kavaliauskiene

In the context of accelerating urbanisation, cities must ensure a viable economy, social well-being, and a healthy environment. Transport is one of the key conditions for economic development and meeting the needs of countries, regions, and cities. However, transport must meet not only the physiological but also the social needs of society, one of which is environmental security. Urban transport accounts for around 40% of CO2 emissions and 70% of other pollutants from road transport. Thus, one of the most difficult issues for any city to address when building bypasses is the growing number of cars in the city, traffic congestion, and the reduction of all greenhouse gas emissions. The documents adopted in July 2020 aim to revitalise the EU’s economy by moving towards a green economy and sustainability. In addition to the systematic and comparative analysis of concepts published in the scientific literature, the article also presents an analysis of the concepts of the sustainable city and sustainable transport, as well as a study of the social impact of bypasses and the assessment of the security of the social environment in the Baltic capitals. The aim of the article is to assess the impact of the growing number of vehicles on the security of the city’s social environment. Research results show that the number of pollutants and a direct dependence between the number of pollutants and the driving speed were established. Therefore, it needs to make investments in the transport sector: improving roads, the construction of bypasses, and the technical parameters of purchased cars.


2021 ◽  
Vol 1 (50) ◽  
pp. 170-179
Author(s):  
Rabosh I ◽  
◽  
Khrutba V ◽  
Kobzysta O ◽  
◽  
...  

In recent years, the state of the road transport infrastructure in Ukraine has deteriorated significantly. With the process of urbanization and the expansion of the transport infrastructure, the ecological danger of the functioning of these strategically important objects increases, which requires effective methods of detailed study of the state of environmental components in areas of urban pollution in order to prevent negative consequences. Working with the problematic, using robots, we analyzed the methods to monitor the environmental situation around the road transport infrastructure for the development of recommendations for advancing efficiency. An algorithm for assessing the environmental situation around the objects of motor transport infrastructure is considered, based on monitoring the impact of these objects on the components of the environment and determining the main factors of this influence. The regularities and dependences of the influence of the motor transport infrastructure from the standpoint of environmental safety have been established. The indicators of pollution of the components of the environment in the study areas and methods of their production are analyzed. It has been concluded that a complex combination of chemical research methods with biodication is observable, makes it possible to analyze the effect of vehicles on various components of the environment (atmospheric air, soil and soil solutions, plants, animals, surface waters, etc.) and to establish the level of anthropogenic load. KEY WORDS: MOTOR VEHICLE INFRASTRUCTURE, ENVIRONMENTAL SAFETY, HARMFUL SUBSTANCES, POLLUTION


Transport ◽  
2012 ◽  
Vol 27 (2) ◽  
pp. 165-170 ◽  
Author(s):  
Rasa Ušpalytė-Vitkūnienė ◽  
Vytautas Grigonis ◽  
Gražvydas Paliulis

A rapidly developing and equality-based society needs a reliable and attractive public transport system. With booming mobility in Lithuania, a great importance has been attached to the sustainable development concept, and public transport has been given priority in the urban transport system. Accessibility and comfort of public transport are essential indicators that guarantee equal travelling opportunities for all people. Transport modelling is the only economical and sufficiently reliable way to carry out a forward assessment of the impact of innovations to be applied to the overall system without involvement of passengers. This paper considers estimation of the origin–destination (O–D) matrix and its size correction. The public transport (PT) system of Vilnius City was taken as a basis for the research. Modelling of Vilnius City public transport was carried out with the help of VISUM software. Modelling of the public transport route network in Vilnius is aimed at improving the quality of life of inhabitants of the city. The O–D matrix is one of the key elements in modelling. Reliability of modelling results is based on reliability and size of the matrix. Although many scientists analyse the problem of estimating an O–D matrix, this paper focuses on the size of the O–D matrix required in order to give reliable results in PT modelling. During the first step, the matrix of 230 transport districts is estimated, which is reduced by 10 percent with every following step. The aim of this article is to find the break point in the size of O–D matrix where the reliability of PT modeling results falls.


2019 ◽  
Vol 2019 (12) ◽  
pp. 1-11
Author(s):  
Maria Matusiewicz

Transport of urban goods has a signifi cant impact on the lives of residents and the functioning of the local economy. At the same time, it creates numerous problems related to the impact on the environment and the surroundings. Thus, the distribution of goods in the city has a signifi cant impact on the lives of residents and tourists' impressions. Due to the fact that 25 percent EU emissions from transport come from urban areas, cities play a key role in mitigating the negative eff ects of transport. Many cities are currently implementing Sustainable Urban Mobility Plan (SUMP) that focus on people's mobility. In most cases, the distribution of goods is not mentioned in the SUMP or is mentioned briefl y. In the absence of clear guidelines for resolving urban transport issues, some cities have adopted various strategic documents and measures. In the absence of standardization of documents, it is diffi cult to compare them and determine the level of city advancement in the implementation of urban logistics measures. To overcome this problem, the EC initiated the concept of Sustainable Urban Logistics Plan (SULP). The article presents the structure and plan of implementing SULP.


2018 ◽  
Vol 64 (4) ◽  
pp. 145-159
Author(s):  
A. Brzeziński ◽  
K. Brzeziński ◽  
T. Dybicz ◽  
Ł. Szymański

AbstractWithin the INMOP 3 research project, an attempt was made to solve a number of problems associated with the methodology of modelling travel in urban areas and the application of intermodal models. One of these is the ability to describe the behaviour of transport system users, when it comes to making decisions regarding the selection of means of transport and searching for relationships between travel describing factors and the decisions made in regard of means of transport choice.The paper describes a probabilistic approach to the determination of modal split, and the application of a logistic regression model to determine the impact of variables describing individual and mass transport travels on the probability of selecting specific means of transport. Travels in local model of Warsaw city divided into 9 motivation groups were tested, for which ultimately 8 models were developed, out of which 7 were deemed very well fitted (obtained pseudo R2 was well above 0.2).


2021 ◽  
Vol 186 (3) ◽  
pp. 3-10
Author(s):  
Piotr SZYMANSKI ◽  
Biagio CIUFFO ◽  
Georgios FONTARAS ◽  
Giorgio MARTINI ◽  
Ferenc PEKAR

The increasing efficiency of the transport system during the last 100 hundred years has fuelled and sustained the unprecedent economic growth of our society. It has shaped our livestyles and influenced the development of our cities and town. At the same time it has posed several challenges to our world as the provision of transport opportunities has heavily contribuitred to the depletion of natural resources, pollution, greenhouse gas emissions, etc. Road transport in particular has had a major role into this. Several policies have been introduced during the last 50 years in the attempt to limit the impact of the transport system, but they have been effective only to a certain extent. During the last years, however, new technologies and social trends are promising to disrupt the transport system and make it substantially more efficient and more sustanable. The present paper discusses the possibile environmental impacts of some of the new technologies applied to transport, in particular highlighting how its complexity may jeopardize the possible improvements that the new technologies promise without properly governing their use.


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