scholarly journals Particulate Air Pollution from Motor Vehicles: A Putative Proallergic Hazard?

1999 ◽  
Vol 6 (5) ◽  
pp. 436-441 ◽  
Author(s):  
Riccardo Polosa ◽  
Sundeep Salvi
Keyword(s):  
Air Pollution ◽  
Urban Areas ◽  
Motor Vehicle ◽  
Road Traffic ◽  
Strong Association ◽  
Allergic Diseases ◽  
Motor Vehicles ◽  
Traffic Density ◽  
Vehicle Exhaust ◽  
Public Attention

Air pollution generated from motor vehicle exhaust has become a major cause for scientific and public concern worldwide over recent years. The rapid and marked increase in the motor vehicle traffic and its associated emissions in urban areas have paralleled a sharp increase in the prevalence of allergic diseases such as asthma and rhinitis. Epidemiological studies have demonstrated a strong association between people living in close proximity to roads with high traffic density and increased allergic symptoms, reduced lung function and increased sensitization to common aeroallergens. Several laboratory-based studies have demonstrated that pollutants emitted from motor vehicles can induce allergic inflammation and increase airway hyperresponsiveness, which may provide an underlying mechanism for the increasing prevalence of allergic diseases. Although the detrimental effects of air pollution on human health have been brought to public attention, it appears that less attention has been given to the potential role of road traffic fumes in the induction of the allergic state. Legislators should consider pollutants emitted from motor vehicle exhausts as a potential pro-allergic hazard, before making important changes in environmental policy.

Performance of Visible-Light-Driven Photocatalytic Pavement in Reduction of Motor Vehicles’ Exhaust Gas

2020 ◽  
Vol 2674 (11) ◽  
pp. 512-519
Author(s):  
Zhuoying Jiang ◽  
Xiong (Bill) Yu
Keyword(s):  
Absorption Spectrum ◽  
Visible Light ◽  
Motor Vehicle ◽  
Computational Simulation ◽  
Motor Vehicles ◽  
Traffic Density ◽  
Ultraviolet Region ◽  
Exhaust Gas ◽  
Vehicle Exhaust ◽  
Three Dimensional Model

Titanium dioxide (TiO2) is a widely used photocatalyst that can oxidize motor vehicle exhaust, for example, carbon monoxide (CO), nitrogen oxides (NOx), hydrocarbons, and sulfur dioxide, under the irradiation of sunlight. It has been reported that nano-scale TiO2 particles can be effectively used to modify the concrete-asphalt pavement, and make it as a photocatalytic pavement. However, the pure TiO2 additive limits its absorption spectrum to the ultraviolet region, which only occupies a small portion of sunlight irradiance. To increase the utilization of the full spectrum of sunlight, it has been demonstrated that doping TiO2 with substances such as Carbon (C), Nitrogen (N), or metal can reduce the band-gap and extend the threshold of the absorption spectrum to the visible light region. Therefore, doped-TiO2 has a better photocatalytic performance under sunlight irradiation. This paper conducted computational simulation of the kinetics of photocatalytic pavement to quantify the efficiency of doped-TiO2 embedded pavement in reducing exhaust gas from motor vehicles. A three-dimensional model is developed on a section of local road with doped-TiO2 embedded pavement. The effects of doped-TiO2 concentration, daylight conditions, and traffic flow conditions on the removal of NOx and CO were studied. The results indicate that the pavement with doped-TiO2 coating is effective to remove CO and NOx under different traffic density and daylight intensity conditions. Compared with UV activated TiO2, visible-light-activated doped-TiO2 features significantly higher removal efficiency of poisonous exhaustive gas including NOx and CO.

scholarly journals Tyre Weights an Overlooked Diffuse Source of Lead and Antimony to Road Runoff

2020 ◽  
Vol 12 (17) ◽  
pp. 6790
Author(s):  
Matthew Taylor ◽  
Niklas Kruger
Keyword(s):  
Urban Areas ◽  
Motor Vehicle ◽  
Environmentally Benign ◽  
Motor Vehicles ◽  
Traffic Density ◽  
Road Runoff ◽  
Diffuse Source ◽  
The Road ◽  
Roadside Dust ◽  
On The Road

Lead (Pb) remains elevated in road runoff and roadside dust, which has been attributed to legacy lead in surface soils from leaded petrol. However, “lead” tyre weights, an alloy of 95% Pb and 5% Sb, may be a relatively unrecognised diffuse source of Pb and Sb as they are still used in many countries. An unknown number of these weights drop off tyre rims and deposit on the road where they are abraded and dispersed, potentially causing adverse environmental effects. The type, number and weight of tyre weights lost from motor vehicles were characterised for a range of roading infrastructures and motor vehicle intensities in a 38 month long study of a 6.9 km length of road in Hamilton City, New Zealand. Overall, 1070 tyre weights with a combined mass of 18.6 kg were collected. About 96.4% of the collected weights were made of “lead”, which is an alloy of 95% Pb and 5% Sb, indicating tyre weights can be a major source of Pb and Sb in urban areas. The tyre weight distribution on roads used in this study depended mainly on traffic density and the prevalence of “start stop” patterns in traffic flow influenced by roundabouts and intersections. “Lead” tyre weights should be phased out and replaced with environmentally benign materials.

scholarly journals Climate change, air pollution and extreme events leading to increasing prevalence of allergic respiratory diseases

2013 ◽  
Vol 8 ◽  
Author(s):  
Gennaro D’Amato ◽  
Carlos E. Baena-Cagnani ◽  
Lorenzo Cecchi ◽  
Isabella Annesi-Maesano ◽  
Carlos Nunes ◽  
...  
Keyword(s):  
Climate Change ◽  
Air Pollution ◽  
Air Pollutants ◽  
Respiratory Diseases ◽  
Motor Vehicle ◽  
Allergic Diseases ◽  
World Health ◽  
Motor Vehicles ◽  
The European Union ◽  
The World

The prevalence of asthma and allergic diseases has increased dramatically during the past few decades not only in industrialized countries. Urban air pollution from motor vehicles has been indicated as one of the major risk factors responsible for this increase. Although genetic factors are important in the development of asthma and allergic diseases, the rising trend can be explained only in changes occurred in the environment. Despite some differences in the air pollution profile and decreasing trends of some key air pollutants, air quality is an important concern for public health in the cities throughout the world. Due to climate change, air pollution patterns are changing in several urbanized areas of the world, with a significant effect on respiratory health. The observational evidence indicates that recent regional changes in climate, particularly temperature increases, have already affected a diverse set of physical and biological systems in many parts of the world. Associations between thunderstorms and asthma morbidity in pollinosis subjects have been also identified in multiple locations around the world. Allergens patterns are also changing in response to climate change and air pollution can modify the allergenic potential of pollens especially in presence of specific weather conditions. The underlying mechanisms of all these interactions are not well known yet. The consequences on health vary from decreases in lung function to allergic diseases, new onset of diseases, and exacerbation of chronic respiratory diseases. Factor clouding the issue is that laboratory evaluations do not reflect what happens during natural exposition, when atmospheric pollution mixtures in polluted cities are inhaled. In addition, it is important to recall that an individual’s response to pollution exposure depends on the source and components of air pollution, as well as meteorological conditions. Indeed, some air pollution-related incidents with asthma aggravation do not depend only on the increased production of air pollution, but rather on atmospheric factors that favour the accumulation of air pollutants at ground level. Considering these aspects governments worldwide and international organizations such as the World Health Organization and the European Union are facing a growing problem of the respiratory effects induced by gaseous and particulate pollutants arising from motor vehicle emissions.

scholarly journals EMMISION OF POLLUTANTS ORIGINATING FROM MOBILE SOURCES ON THE EXAMPLE OF THE CITY OF KRAGUJEVAC

2019 ◽  
pp. 115
Author(s):  
Zoran Marjanović ◽  
Miomir Raos ◽  
Milena Jovanovic ◽  
Jovana Randjelović
Keyword(s):  
Air Pollution ◽  
Urban Areas ◽  
Motor Vehicles ◽  
Traffic Density ◽  
Human Environment ◽  
Local Climate ◽  
Climate Conditions ◽  
Exhaust Gases ◽  
Mobile Sources ◽  
The City

Traffic jam makes cities less pleasant for living and it also decreases traffic efficiency whereas travel time, fuel consumption and drivers’ stress are increased. A special problem is its influence on people’s health caused by emission of exhaust gases. Emission of pollutants originating from mobile sources is primarily conditioned by a level of technologies applied to the vehicle, vehicle’s technical state, traffic intensity, traffic density, local climate conditions, etc. Air pollution due to use of motor vehicles is becoming one of the major problems in urban areas across the world. With the increase of the number of motor vehicles and traffic intensification, the influence of exhaust gases on human environment also has increased. Considering the average age of the vehicles participating in traffic in the city of Kragujevac and the traffic capacity of traffic arteries, most frequently not designed for such a large number of vehicles concentrated at the core of the city, it is to be expected that the air pollution coming from mobile sources will become a problem that requires detailed analysis. For that purpose, a detailed statistical analysis of the vehicle fleet of the city of Kragujevac is conducted. An estimation of the influence of the vehicles on the air pollution in the city of Kragujevac, has been given in the paper.

scholarly journals Analisis Pengaruh Riba Terhadap Tingkat Kemacetan di Ibu Kota Jakarta

2019 ◽  
Vol 19 (2) ◽  
pp. 121-143
Author(s):  
Ruslan Husein Marasabessy
Keyword(s):  
Air Pollution ◽  
Urban Areas ◽  
Motor Vehicle ◽  
World City ◽  
Best Interests ◽  
Motor Vehicles ◽  
Consumption Behavior ◽  
Traffic Jams ◽  
Single Person ◽  
The World

The first and foremost reason riba is haram is because Allah declared it so. It is based on Allah’s infinite wisdom that He deems an action to be obligatory or prohibited, prescribing matters in man’s best interests, in this life and in the Hereafter, as He is the All-Wise, All- Knowing. The scholars of Islam have suggested the following reasons as to why riba is haram:There are many proofs showing that riba is haram and one of the most serious sins in Islam.Abu Hurayra said, the Messenger of Allah (pbuh) said: A time will come over mankind when not a single person will remain who does not consume riba (usury, interest); and if one does not consume it, the vapor or dust of it will reach him.nowdays Living in a capitalist society makes it difficult to completely avoid riba.however, the threat is not enough for the community to avoid the usury case. the effect of usury in real terms must be clearly described, in order to raise public awareness.the consumption behavior of motor vehicles is one of the causes of congestion in urban areas, many people use usury (Leasing) to buy vehicles, There are many reasons why we suffer traffic jams every day. One of these is the rapid growth of the population. As a result of this, the number of cars is increasing annually. Jakarta was named the world city with the worst traffic in one index last year. An estimated 70% of the city’s air pollution comes from vehicles. this paper found that congestion in Jakarta is caused by usury, this can be seen from the high use of usury instruments in motor vehicle financing (leasing).

scholarly journals Overview of Intelligent Transport System (ITS) and Its Applications

2021 ◽  
Author(s):  
Purnendu S M Tripathi ◽  
Ambuj Kumar ◽  
Ashok Chandra
Keyword(s):  
Air Pollution ◽  
Radio Frequency ◽  
Transport System ◽  
Urban Areas ◽  
Road Traffic ◽  
Traffic Information ◽  
Intelligent Transport System ◽  
Comprehensive Overview ◽  
Frequency Bands ◽  
Intelligent Transport

Since last decades world, predominantly urban areas, is experiencing huge voluminous road traffic growth, resulting in heavy congestion, air pollution, accidents, and poor efficiency.  Many people every day are the victims of this poor management of tremendous traffic. Since many years, there had been some automation in managing the traffic namely Electronic Toll Collection (ETC), Electronic parking payment, normal traffic information etc. However, there are little efforts for making the system more advanced. Recently, several kinds of research are being launched by many countries to develop Intelligent Transport System (ITS), with the objectives to minimize congestion, ensure better safety, reduce air pollution etc. ITS are planned to establish robust communication between vehicle to vehicle (V2V), vehicle to pedestrian (V2P), vehicle to infrastructure (V2I), and vehicle to network (V2N). Initially, for communication links ITS, deploys Wi-Fi network, but because of limited capacity and huge requirement, some links use 5.8 GHz radio frequency for such purposes. IEEE, International Telecommunications Union (ITU) and other advanced research organisations are studying 700 MHz band and mm frequency bands for advanced ITS. ITS is poised to use Information & Communication Technology (ICT) networks for such purposes. ITU has established Study Groups/study questions for addressing ITS issues. The World Radio Conference (WRC-2019) has made a Recommendation 208 regarding harmonization of frequency bands for ITS applications. This paper presents a comprehensive overview of ITS, its applications and analysis etc. The radio frequency spectrum aspects and role of 5 G in ITS are also described in detail.  

scholarly journals Road Traffic Accidents by 'Nasimon' and 'Karimon'-A Study in Faridpur

2012 ◽  
Vol 7 (1) ◽  
pp. 6-9
Author(s):  
ASMJ Chowdhury ◽  
MS Alam ◽  
SK Biswas ◽  
RK Saha ◽  
AR Mondal ◽  
...  
Keyword(s):  
Low Socioeconomic Status ◽  
Urban Areas ◽  
Traffic Accidents ◽  
Road Traffic ◽  
Road Accident ◽  
Motor Vehicles ◽  
Road Traffic Accidents ◽  
Road Accidents ◽  
College Hospital ◽  
Medical College

Road traffic accidents in Bangladesh have been rapidly increasing with huge mortality through road accidents each year. There are many causes of road accidents in recent years; one important cause is running of locally made improvised three wheelers (flat bed tricycle) in the urban areas and also on the highways, popularly known as 'Nasimon' and 'Karimon'. This prospective study was carried out in Faridpur Medical College Hospital from January through June 2011, to study the accident patients caused by 'Nasimon' and 'Karimon'. Fifty six (12%) patients were of RTA by 'Nasimon' and 'Karimon' out of a total of 468 patients admitted into our hospital during this period. Most patients (41, 73.21%) were male, highest accidents (24, 42.86%) were observed among 21-30 years age group and most victims (33, 58.93%) were belonged to low socioeconomic status. Commonest (31, 55.36%) victims were passengers of 'Nasimon' and 'Karimon' while maximum number of accidents (46, 82.14%) took place in the urban areas and on the highways. Injury pattern of victims were similar to that found in any other road accident patients. These three wheelers 'Nasimon' and 'Karimon' are run in violating of Bangladesh Motor Vehicles Act (1983) as they are totally unfit for plying on the highways. Strict surveillance against these illegal and risky vehicles on the highways and in the urban areas by law enforcing agencies is required as a measure to reduce the burden of road accidents in our country.DOI: http://dx.doi.org/10.3329/fmcj.v7i1.10289Faridpur Med. Coll. J. 2012;7(1): 06-09

scholarly journals Integrating Modes of Transport in a Dynamic Modelling Approach to Evaluate Population Exposure to Ambient NO2 and PM2.5 Pollution in Urban Areas

2020 ◽  
Vol 17 (6) ◽  
pp. 2099 ◽  
Author(s):  
Martin Otto Paul Ramacher ◽  
Matthias Karl
Keyword(s):  
Air Pollution ◽  
Population Dynamics ◽  
Urban Areas ◽  
Road Traffic ◽  
Ambient Air ◽  
Traffic Emissions ◽  
Exposure Model ◽  
Population Exposure ◽  
Road Traffic Emissions ◽  
Pollutant Concentrations

To evaluate the effectiveness of alternative policies and measures to reduce air pollution effects on urban citizen’s health, population exposure assessments are needed. Due to road traffic emissions being a major source of emissions and exposure in European cities, it is necessary to account for differentiated transport environments in population dynamics for exposure studies. In this study, we applied a modelling system to evaluate population exposure in the urban area of Hamburg in 2016. The modeling system consists of an urban-scale chemistry transport model to account for ambient air pollutant concentrations and a dynamic time-microenvironment-activity (TMA) approach, which accounts for population dynamics in different environments as well as for infiltration of outdoor to indoor air pollution. We integrated different modes of transport in the TMA approach to improve population exposure assessments in transport environments. The newly developed approach reports 12% more total exposure to NO2 and 19% more to PM2.5 compared with exposure estimates based on residential addresses. During the time people spend in different transport environments, the in-car environment contributes with 40% and 33% to the annual sum of exposure to NO2 and PM2.5, in the walking environment with 26% and 30%, in the cycling environment with 15% and 17% and other environments (buses, subway, suburban, and regional trains) with less than 10% respectively. The relative contribution of road traffic emissions to population exposure is highest in the in-car environment (57% for NO2 and 15% for PM2.5). Results for population-weighted exposure revealed exposure to PM2.5 concentrations above the WHO AQG limit value in the cycling environment. Uncertainties for the exposure contributions arising from emissions and infiltration from outdoor to indoor pollutant concentrations range from −12% to +7% for NO2 and PM2.5. The developed “dynamic transport approach” is integrated in a computationally efficient exposure model, which is generally applicable in European urban areas. The presented methodology is promoted for use in urban mobility planning, e.g., to investigate on policy-driven changes in modal split and their combined effect on emissions, population activity and population exposure.

CHANGES IN POLISH LEGAL REGULATIONS CONCERNING ROAD TRAFFIC IN THE 20S AND 30S OF THE 20TH CENTURY, IN THE CONTEXT OF AN EXEMPLARY ROAD COLLISION

2018 ◽  
Vol VIII (z. 2) ◽  
pp. 191-201
Author(s):  
Tomasz Sypniewski
Keyword(s):  
20Th Century ◽  
Motor Vehicle ◽  
Road Traffic ◽  
Public Works ◽  
Motor Vehicles ◽  
Legal Regulations ◽  
Normal Functioning ◽  
Vehicle Traffic ◽  
Internal Affairs

Today, looking at the still crowded streets of our cities, we often do not realize how important and essential for their normal functioning are legal regulations of road traffic for all its users. The beginnings of Polish legislation in this field date back to the 1920s. The dynamics of change, occurring in this relatively new field of life, required the introduction of a series of further adjustments and revisions. The Regulation of July 6, 1922 was only six years old. On January 27, 1928, the Minister of Public Works and the Minister of Internal Affairs in agreement with the Minister of Military Affairs passed a regulation on the movement of motor vehicles on public roads. Before 1939, normative acts regulating the rules of motor vehicle traffic were repealed twice and replaced with newer legal acts.

scholarly journals Analisis Pencemaran Udara Akibat Kepadatan Jalan Lalu Lintas di Kota Padang (Studi Kasus: Karbon Monoksida di Jalan Prof.Dr.Hamka, Jalan Khatib Sulaiman, dan Jalan Rasuna Said)

JURNAL BUANA ◽  
2018 ◽  
Vol 2 (2) ◽  
pp. 569
Author(s):  
Putri Ines Wijaya
Keyword(s):  
Air Pollution ◽  
Carbon Monoxide ◽  
Motor Vehicles ◽  
Primary Data ◽  
Traffic Density ◽  
Gas Concentration ◽  
Standard Index ◽  
Total Vehicle ◽  
Road Width ◽  
Co Gas

ANALISIS PENCEMARAN UDARA AKIBAT KEPADATAN JALAN LALU LINTAS DI KOTA PADANG (Studi Kasus: Karbon Monoksida di Jalan Prof Dr Hamka, Jalan Khatib Sulaiman, dan Jalan Rasuna Said) Putri Ines Wijaya1 , Triyatno2, Febriandi3 Program Studi Geografi Fakultas Ilmu Sosial, Universitas Negeri Padang Email : [email protected] ABSTRAK Penelitian ini bertujuan untuk: (1) mengetahui kepadatan kendaraan bermotor Jalan Prof. Dr. Hamka, Jalan Khatib Sulaiman, dan Jalan Rasuna Said, Kota Padang, (2) mengetahui volume karbon monoksida (CO) yang dilepaskan kendaraan bermotor yang diakibatkan oleh kepadatan Jalan Prof. Dr. Hamka, Jalan Khatib Sulaiman, dan Jalan Rasuna Said, Kota Padang. Jenis penelitian ini adalah deskriptif kuantitatif dengan menggunakan data primer untuk melihat volume kendaraan, kadar karbon monoksida (CO), dan meteorologi. Data yang diperoleh di lapangan diolah dengan menggunakan rumus dari Interval untuk jumlah kendaraan, rumus ISPU (Indeks Standar Pencemaran Udara) untuk karbon monoksida (CO) di udara. Hasil penelitian menemukan bahwa, (1) kepadatan tertinggi terjadi di ruas Jalan Khatib Sulaiman dihari Senin total jumlah kendaraan 13125 unit kendaraan dengan lebar ruas jalan 3,50 meter. Kepadatan terendah di hari Sabtu di ruas Jalan Khatib Sulaiman total jumlah kendaraan 3826 unit kendaraan (2) konsentrasi gas CO tertinggi di Jalan Prof. Dr. Hamka sebesar 160,66 mg/m3 kategori udara tidak sehat, sedangkan konsentrasi terendah di Jalan Rasuna Said sebesar 26,67 mg/m3 kategori udara belum tercemar. Kata kunci : kepadatan lalu lintas, pencemaran udara, karbon monoksida (CO) ABSTRACT His study aims to: (1) know the density of motor vehicles Road Prof. Dr. Hamka, Jalan Khatib Sulaiman, and Jalan Rasuna Said, Kota Padang, (2) to know the volume of carbon monoxide (CO) released by motor vehicles caused by the density of Prof. Roads. Dr. Hamka, Jalan Khatib Sulaiman, and Jalan Rasuna Said, Padang City. The type of this research is descriptive quantitative by using primary data to see vehicle volume, carbon monoxide (CO), and meteorology. The data obtained in the field is processed using the formula of the Interval for the number of vehicles, the formula of the ISPU (Air Pollution Standard Index) for carbon monoxide (CO) in the air. The results found that, (1) the highest density occurred in Jalan Khatib Sulaiman Street on Monday total vehicle number 13125 units of vehicles with road width of 3.50 meters. The lowest density on Saturdays in Jalan Khatib Sulaiman total number of vehicles of 3826 units of vehicles (2) the highest CO gas concentration on Jalan Prof. Dr. Hamka of 160.66 mg/m3 unhealthy air category, while the lowest concentration in Jalan Rasuna Said of 26.67 mg/m3 air category has not been contaminated. Keywords: traffic density, air pollution, carbon monoxide (CO)

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