scholarly journals THE IMPACT OF ACTUATED CONTROL ON THE ENVIRONMENT AND THE TRAFFIC FLOW

2021 ◽  
pp. 1-10
Author(s):  
Ambróz Hájnik ◽  
Alica Kalašová ◽  
Veronika Harantová ◽  
Ján Beňuš ◽  
Stanislav Kubaľák
Keyword(s):  
Environmental Pollution ◽  
Traffic Flow ◽  
Delay Time ◽  
Road Transport ◽  
Traffic Data ◽  
Basic Characteristics ◽  
The Impact ◽  
Positive Results

In our paper, we have analyzed and compared fixed and actuated control at a chosen intersection, where we pointed out the importance of actuated control and its benefits. We have used traffic data from sensors in the roadway. The intersection was modelled in Aimsun, where we performed simulations. The research focused mainly on the impact of actuated control on the basic characteristics of the traffic flow, delay time and emissions. The outputs of simulations showed positive results of actuated control in all compared values. The environmental pollution topic is up-to-date and road transport has a significant impact on it. Furthermore, we want to continue with our research to investigate the impact of speed changes on emission production and the smoothness of the traffic flow under fixed and actuated control.

Impact of Rainfall Condition on Traffic Flow and Speed: A Case Study in Johor and Terengganu

2014 ◽  
Vol 70 (4) ◽  
Author(s):  
Nordiana Mashros ◽  
Johnnie Ben- Edigbe ◽  
Sitti Asmah Hassan ◽  
Norhidayah Abdul Hassan ◽  
Nor Zurairahetty Mohd Yunus
Keyword(s):  
Traffic Flow ◽  
Monsoon Season ◽  
Flow Speed ◽  
Free Flow ◽  
Road User ◽  
Traffic Data ◽  
Average Volume ◽  
Rainfall Condition ◽  
Free Flow Speed ◽  
The Impact

This paper explores the impact of various rainfall conditions on traffic flow and speed at selected location in Terengganu and Johor using data collected on two-lane highway. The study aims to quantify the effect of rainfall on average volume, capacity, mean speed, free-flow speed and speed at capacity. This study is important to come out with recommendation for managing traffic under rainfall condition. Traffic data were generated using automatic traffic counters for about three months during the monsoon season. Rainfall data were obtained from nearest surface rain gauge station. Detailed vehicular information logged by the counters were retrieved and processed into dry and various rainfall conditions. Only daylight traffic data have been used in this paper. The effect of rain on traffic flow and speed for each condition were then analysed separately and compared. The results indicated that average volumes shows no pronounce effect under rainfall condition compared to those under dry condition. Other parameters, however, show a decrease under rainfall condition. Capacity dropped by 2-32%, mean speed, free-flow speed and speed at capacity reduced by 3-14%, 1-14% and 3-17%, respectively. The paper recommends that findings from the study can be incorporated with variable message sign, local radio and television, and variable speed limit sign which should help traffic management to provide safer and more proactive driving experiences to the road user. The paper concluded that rainfall irrespective of their intensities have impact on traffic flow and speed except average volume.

scholarly journals Assessment of the Impact of Road Traffic on the Pollution of Urbanized Territories

2021 ◽  
Author(s):  
В.Б. Заалишвили ◽  
А.С. Кануков ◽  
К.В. Корбесова
Keyword(s):  
Air Pollution ◽  
Environmental Pollution ◽  
Road Transport ◽  
Transport Infrastructure ◽  
Federal State ◽  
Flow Density ◽  
Atmospheric Air ◽  
The Impact ◽  
North Ossetia ◽  
Stationary Sources

Экономическое развитие всех регионов основано на доступе людей к товарам и услугам, которые обеспечиваются современной транспортной инфраструктурой. Автомобильный транспорт является основным способом транспортировки грузов и населения. В то же время положительные аспекты использования транспорта тесно связаны с такими негативными аспектами, как загрязнение окружающей среды и отрицательным влиянием на здоровье человека. На территории Республики Северная Осетия - Алания наибольший вклад в загрязнение окружающей среды вносит деятельность предприятий цветной металлургии и автотранспорта. Более 30 предприятий находится в промышленном узле г. Владикавказа, и их деятельность в той или иной мере связана с загрязнением атмосферного воздуха. Значительный вклад в загрязнение воздуха вносит автотранспорт, количество которого в г. Владикавказе, по данным Федеральной службы государственной статистики, за последние 20 лет увеличилось более чем в 2 раза. Цель исследования. Изучение основных источников загрязнения окружающей среды автомобильным транспортом, исследование взаимосвязей между уровнем загрязнения среды, интенсивностью движения и экологическим классом автомобильного транспорта. Установление показателя загрязнения окружающей среды автомобильным транспортом, характеризующего степень воздействия на окружающую среду и здоровье населения. Методы исследования. В ходе настоящей работы были собраны и проанализированы все имеющиеся данные по динамике объемов выбросов от стационарных источников и автотранспорта на территории РСО-А за 1997–2015 гг. Указанные данные обрабатывались с помощью корреляционного и регрессионного анализов. Результаты работы. Результаты исследований позволили установить, что прослеживается прямая зависимость или тренд между плотностью потока машин и загрязнением воздушной среды. Установлено, что выбросы от автомобильного транспорта на порядок превосходят стационарные источники. Предложен суммарный показатель Zатм загрязнения атмосферного воздуха, рассчитываемый как сумма отношений концентрации отдельных загрязнителей к соответствующим значениям ПДК за вычетом количества используемых показателей. The economic development of any country is based on the access of population to goods and services that are provided by modern transport infrastructure. Currently, road transport is the most common way of transporting goods and people. At the same time, the positive aspects of using transport are closely related to such negative aspects as environmental pollution and negative impact on public health. On the territory of the Republic of North Ossetia-Alania, the largest contribution to environmental pollution is made by the activities of non-ferrous metallurgy enterprises and vehicles. More than 30 enterprises are located in the industrial hub of the city of Vladikavkaz, and their activities to one degree or another are associated with atmospheric air pollution. A significant contribution to air pollution is made by motor vehicles.Their number in Vladikavkaz has more than doubled over the past 20 years, according to the Federal State Statistics Service. Aim. Study of the main sources of pollution of an urbanized area by road transport. The research and identification of the relationship between the level of environmental pollution, traffic intensity and the ecological class of road transport and the establishment of an indicator of environmental pollution by road transport, characterizing the degree of impact on the environment and safety of the population. Methods. In the course of this study, all the available data on the dynamics of emissions from stationary sources and vehicles on the territory of North Ossetia-A for 1997–2015 were collected and analyzed. These data were processed using correlation and regression analyzes. Results.The research results made it possible to establish that there is a direct relationship or trend between the flow density of cars and air pollution. It was found that emissions from road transport exceed stationary sources by an order of magnitude. A total indicator Zatm of atmospheric air pollution is proposed, calculated as the sum of the ratios of the concentration of individual pollutants to the corresponding MPC values minus the number of indicators used.

LIFE LIMIT TRENDS BY THE EXAMPLE OF FOREIGN CARS

2020 ◽  
Vol 71 (4) ◽  
pp. 100-110
Author(s):  
G.E. MITYAGIN ◽  
Keyword(s):  
Negative Impact ◽  
Road Transport ◽  
Steady Increase ◽  
Socially Responsible ◽  
Annual Increase ◽  
Significant Harm ◽  
Harmful Substances ◽  
The Impact ◽  
Positive Results ◽  
Emissions Of Harmful Substances

Modern studies on the impact of road transport on air pollution indicate a steady increase in negative impact, reflected in an annual increase in emissions. In 2017, they reached the level of 14.5 million tons, which exceeds the level of 2012 by 14 %, while despite the tightening of re-quirements for cars, an increase of 2.5 % was recorded only in the last year [1]. Modern cars do not cause significant harm to the environment, unlike earlier ones, however, the share of relatively new cars is small, about 15 % of the fleet [2]. Positive results in terms of reducing gross emissions of harmful substances, especially in cities, can be achieved by reducing or modernizing the fleet of vehicles owned by both legal entities and individual owners. Weighted and socially responsible decisions in the field of modernization of the fleet of vehicles of individual owners can be made on-ly after a detailed analysis of not only the age structure of the fleet, but also the trends in the limit of service life, as an indicator of the owner’s willingness to voluntarily stop using the car.

scholarly journals The Impact of the Pandemic on Vehicle Traffic and Roadside Environmental Pollution: Rzeszow City as a Case Study

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4299
Author(s):  
Miroslaw Smieszek ◽  
Vasyl Mateichyk ◽  
Magdalena Dobrzanska ◽  
Pawel Dobrzanski ◽  
Ganna Weigang
Keyword(s):  
Air Pollution ◽  
Environmental Pollution ◽  
Traffic Flow ◽  
Traffic Volume ◽  
Motor Vehicles ◽  
Vehicle Traffic ◽  
The Road ◽  
The Impact ◽  
The City ◽  
Roadside Environment

The development of the COVID-19 pandemic and the related lockdown had a major impact on vehicle traffic in cities. Based on available data from the selected city of Rzeszow, Poland, it was decided to assess changes in vehicle traffic and the impact of these changes on roadside environmental pollution. As part of the research, data from the first half of 2020 regarding vehicle traffic on selected streets of the city and on the city’s inlet routes were analyzed. For the selected road sections, changes in hourly traffic volume in 2020, compared with 2019, were also determined. With data on traffic volume, an attempt was made to estimate the impact of changes in traffic volume on air pollution in the city. Research on air pollution from motor vehicles was focused on a selected section of a city road that was equipped with an automatic air pollution measurement station located very close to the road. Additionally, at the road intersection and in the vicinity of the measuring station, a sensor was installed in the roadway to count passing vehicles. A preliminary analysis of air pollution data revealed that factors such as wind speed and direction and outside temperature had a large impact on measurement results. To eliminate the influence of these factors and to obtain data concerning only contamination originating from motor vehicles traveling along the road, an appropriate mathematical model of the traffic flow–roadside environment system was built. This model was designed to determine the air pollution in the vicinity of the road generated by traffic flow. The constructed model was verified, and the conditions for its use were determined in order to study the impact of traffic and roadside environment on the level of air pollution from harmful exhaust substances. It was shown that at certain times of the day, especially at low temperatures, other sources of harmful emissions related to home heating play a major role in air pollution in the city.

scholarly journals Impact of liberalization on the taxi market in the Republic of Croatia

2021 ◽  
Author(s):  
Marko Slavulj ◽  
Davor Brčić ◽  
Matija Sikirić ◽  
Božo Radulović
Keyword(s):  
European Union ◽  
Traffic Flow ◽  
Free Market ◽  
Road Transport ◽  
The European Union ◽  
Service Market ◽  
Taxi Market ◽  
The Republic ◽  
Business Entities ◽  
The Impact

Market liberalization is an important objective of the European Union. It is a process of removing government restrictions and opening up markets for private companies. Road Transport Act which entered into force on 12 May 2018, enabled a completely free market for taxi services on the territory of the Republic of Croatia. Local self-government units, by this Law, are obliged to enable the provision of taxi services in their administrative area to all business entities that are eligible for taxi transportation. The paper will present a cross-section of the impact of liberalization on the taxi market in the cities of the European Union, as well as analyse specific features in the legal regulations of individual EU member states. The analysis will be made in order to better understand the new situation in the Republic of Croatia. The purpose of this paper is to determine the effects of liberalization of the taxi service market, and to what extent auto-taxi transportation contributes to the congestion of urban roads in Croatian cities. The aim of the paper is to analyse the structure of traffic flow, the share of taxi vehicles in traffic flow, and to draw guidelines and conclusions based on the analysis.

scholarly journals PENYULUHAN TENTANG DAGUSIBU PADA ANGGOTA PKK DI KECAMATAN SINGARAN PATI KELURAHAN LINGKAR TIMUR, KOTA BENGKULU

2021 ◽  
Vol 5 (1) ◽  
pp. 166
Author(s):  
Dwi Dominica ◽  
Reza Pertiwi ◽  
Deni Agus Triawan
Keyword(s):  
Environmental Pollution ◽  
Community Service ◽  
Public Awareness ◽  
Question And Answer ◽  
Service Activity ◽  
Approach Method ◽  
The Impact ◽  
Positive Results ◽  
At Home

Dampak dari kesalahan pengelolaan obat yang tidak tepat saat membuang obat akan menyebabkan Pencemaran lingkungan sehingga terganggunya keseimbangan ekosistem di sekitar. Salah satu cara pengelolaan obat yang baik dan benar adalah DAGUSIBU. Cara ini menjelaskan tata cara pengelolaan obat dari awal mereka dapatkan hingga saat obat sudah tidak dikonsumsi lagi dan akhirnya dibuang. Tujuan kegiatan pengabdian pada masyarakat ini antara lain : Untuk meningkatkan pemahaman dan meningkatkan kesadaran masyarakat khususnya pada anggota PKK di kecamatan singaran pati kelurahan Lingkar Timur kota Bengkulu agar tidak keliru dalam mendapatkan, menggunakan, menyimpan dan membuang obat. Metode yang digunakan pada kegiatan ini adalah metode pendekatan melalui: Ceramah dan Tanya jawab, yang dilakukan untuk memberikan kesempatan kepada masyarakat apabila ada yang belum dipahamai untuk mengevaluasi keberhasilan penyuluhan. Dari hasil evaluasi kegiatan dan berdasarkan hasil pretest dan post tes yang dilakukan selama kegiatan menunjukkan hasil yang positif dimana terjadi peningkatan pengetahuan masyarakat dalam menggunakan, menyimpan, dan membuang obat dirumah. Kata kunci: Penyuluhan, Sosialisasi, DAGUSIBU, Anggota PKK, Singgaran Pati Kota Bengkulu   ABSTRACT The impact of mismanagement of drugs that are not appropriate when disposing of drugs will cause environmental pollution so that the balance of the surrounding ecosystem is disrupted. One way of managing drugs that is good and correct is DAGUSIBU. This method describes the procedures for managing drugs from the beginning they were obtained until the time the drug was no longer consumed and finally discarded. The objectives of this community service activity include: To increase understanding and increase public awareness, especially for PKK members in Singaran pati sub-district, Bengkulu City so that they are not mistaken in obtaining, using, storing and disposing of drugs. The method used in this activity is the approach method through: Lecture and Question and Answer, which is carried out to provide opportunities for the community if there is something that is not understood yet to evaluate the success of counseling. From the results of the evaluation of the activities and based on the results of the pretest and posttests carried out during the activity, it shows positive results where there is an increase in people's knowledge in using, storing and disposing of medicines at home. Keywords: Counseling, Sosialization, DAGUSIBU, PKK Members, Singgaran Pati at Bengkulu city                  

The Effect of Internal Corporate Social Responsibility on Job Satisfaction: An Empirical Study on Jordanian Pharmaceutical Companies

2020 ◽  
Vol 8 (2) ◽  
pp. 112
Author(s):  
Sura Altheeb ◽  
Kholoud Sudqi Al-Louzi
Keyword(s):  
Job Satisfaction ◽  
Corporate Social Responsibility ◽  
Social Responsibility ◽  
Quantitative Research ◽  
Skills Development ◽  
Future Research ◽  
Pharmaceutical Companies ◽  
Corporate Social ◽  
The Impact ◽  
Positive Results

The current research investigates the impact of internal corporate social responsibility on job satisfaction in Jordanian pharmaceutical companies. Quantitative research design and regression analysis were applied on a total of 302 valid returns that were obtained in a questionnaire based survey from 14 pharmaceutical companies among employees, supervisors and managers. The results showed that internal corporate social responsibility was significantly related to job satisfaction and three of its dimensions, namely working conditions, work life balance and empowerment contributed significantly to job satisfaction, whereas employment stability and skills development had no contribution. This study implies that Jordanian pharmaceutical companies have to try their best to promote and facilitate internal corporate social responsibility among their employees in an effort to improve their job satisfaction, which will eventually yield positive results for the company as a whole. In light of these results, the research presented many recommendations for future research; the most important ones were the application of this study in other sectors, cultures, and countries, and using of multi method for collecting data.

scholarly journals Impacts of Foreign Direct Investment and Industrial Structure Transformation on Haze Pollution across China

2021 ◽  
Vol 13 (10) ◽  
pp. 5439
Author(s):  
Chenggang Li ◽  
Tao Lin ◽  
Zhenci Xu ◽  
Yuzhu Chen
Keyword(s):  
Foreign Direct Investment ◽  
Environmental Pollution ◽  
Direct Investment ◽  
Industrial Structure ◽  
Spatial Data Analysis ◽  
Annual Data ◽  
Eastern Region ◽  
Structure Transformation ◽  
Haze Pollution ◽  
The Impact

With the development of economic globalization, some local environmental pollution has become a global environmental problem through international trade and transnational investment. This paper selects the annual data of 30 provinces in China from 2000 to 2017 and adopts exploratory spatial data analysis methods to explore the spatial agglomeration characteristics of haze pollution in China’s provinces. Furthermore, this paper constructs a spatial econometric model to test the impact of foreign direct investment (FDI) and industrial structure transformation on haze pollution. The research results show that the high-high concentration area of haze pollution in China has shifted from the central and western regions to the eastern region and from inland regions to coastal regions. When FDI increases by 1%, haze pollution in local and neighboring areas will be reduced by 0.066% and 0.3538%, respectively. However, the impact of FDI on haze pollution is heterogeneous in different stages of economic development. FDI can improve the rationalization level of industrial structure, and then inhibit the haze pollution. However, FDI inhibits the upgrading level of industrial structure to a certain extent, and then aggravates the haze pollution. The research in this paper provides an important decision-making basis for coordinating the relationship between FDI and environmental pollution and realizing green development.

scholarly journals Assessment of Spatiotemporal Peak Shift of Intra-Urban Transportation Taking a Case in Bangkok, Thailand

2021 ◽  
Vol 13 (12) ◽  
pp. 6777
Author(s):  
Masanobu Kii ◽  
Yuki Goda ◽  
Varameth Vichiensan ◽  
Hiroyuki Miyazaki ◽  
Rolf Moeckel
Keyword(s):  
Developing Countries ◽  
Travel Time ◽  
Demand Management ◽  
Likelihood Estimation ◽  
Road Transport ◽  
Peak Shift ◽  
Time Shift ◽  
Peak Time ◽  
Management Scenarios ◽  
The Impact

Reducing congestion has been one of the critical targets of transportation policies, particularly in cities in developing countries suffering severe and chronic traffic congestions. Several traditional measures have been in place but seem not very successful. This paper applies the agent-based transportation model MATSim for a transportation analysis in Bangkok to assess the impact of spatiotemporal transportation demand management measures. We collect required data for the simulation from various data sources and apply maximum likelihood estimation with the limited data available. We investigate two demand management scenarios, peak time shift, and decentralization. As a result, we found that these spatiotemporal peak shift measures are effective for road transport to alleviate congestion and reduce travel time. However, the effect of those measures on public transport is not uniform but depends on the users’ circumstances. On average, the simulated results indicate that those measures increase the average travel time and distance. These results suggest that demand management policies require considerations of more detailed conditions to improve usability. The study also confirms that microsimulation can be a tool for transport demand management assessment in developing countries.

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