Air quality models sensitivity to on-road traffic speed representation: Effects on air quality of 80kmh−1 speed limit in the Barcelona Metropolitan area

2008 ◽  
Vol 42 (36) ◽  
pp. 8389-8402 ◽  
Author(s):  
M GONCALVES ◽  
P JIMENEZGUERRERO ◽  
E LOPEZ ◽  
J BALDASANO
Keyword(s):  
Air Quality ◽  
Metropolitan Area ◽  
Road Traffic ◽  
Speed Limit ◽  
Quality Models ◽  
Traffic Speed

scholarly journals The influence of the Tula, Hidalgo complex on the air quality of the Mexico City Metropolitan Area

Atmósfera ◽  
2014 ◽  
Vol 27 (2) ◽  
pp. 215-225 ◽  
Author(s):  
Jennifer Sandra García-Escalante ◽  
José Agustín García-Reynoso ◽  
Arón Jazcilevich-Diamant ◽  
Luis Gerardo Ruiz-Suárez
Keyword(s):  
Air Quality ◽  
Mexico City ◽  
Metropolitan Area

scholarly journals Air quality analysis for a metropolitan area in Romania during the first half of 2021

2022 ◽  
Vol 354 ◽  
pp. 00066
Author(s):  
Clementina Sabina Moldovan ◽  
Liana-Simona Sbîrnă ◽  
Sebastian Sbîrnă
Keyword(s):  
European Union ◽  
Particulate Matter ◽  
Air Quality ◽  
Metropolitan Area ◽  
Quality Analysis ◽  
The European Union ◽  
Suspended Particulate ◽  
Air Quality Monitoring Stations ◽  
Matter Concentration

This paper aims to interpret and to use within a statistical analysis the concentration profiles of the main air pollutants – i.e., nitrogen oxides (NOx), sulfur dioxide (SO2), carbon monoxide (CO) and suspended particulate matter (PM10) – results recorded during the first half of 2021 by two air quality monitoring stations in Craiova, which is an important metropolitan area in Southern Romania. Another goal of the paper is finding the best numerical diffusion model to fit the recorded values for PM10, as this pollutant seems to be the major problem, because its daily average is often higher than the European Union threshold, meaning that imperative measures have to be taken for reducing particulate matter concentration in Craiova (like in other major Romanian metropolitan areas), in order for Romania to get the exoneration regarding air pollution from the European Union and, of course, for its citizens to improve the quality of their lives.

scholarly journals KTP—Collectively Improving Air Quality in Krakow: A New Air Quality Plan for the Małopolska Region

2021 ◽  
pp. 67-78
Author(s):  
Agnieszka Włodarczyk-Gębik ◽  
Aleksandra Gabriel ◽  
Maria Dubis ◽  
Monika Machowska
Keyword(s):  
Quality Of Life ◽  
Air Pollution ◽  
Air Quality ◽  
Metropolitan Area ◽  
Decision Makers ◽  
Improve Quality ◽  
New Policies ◽  
User Centered

AbstractKTP’s project relates to the challenge of air pollution and the need to improve quality of life in Kraków and the Kraków Metropolitan Area. The aim is to improve the quality of the air by motivating citizens to change their ecological attitudes, transport and heating habits and support decision makers with relevant tools and instruments for better co-creation of local new policies with a user-centered approach.

scholarly journals Evaluating the citywide Edinburgh 20mph speed limit intervention effects on traffic speed and volume: A pre-post observational evaluation

PLoS ONE ◽  
2021 ◽  
Vol 16 (12) ◽  
pp. e0261383
Author(s):  
Glenna F. Nightingale ◽  
Andrew James Williams ◽  
Ruth F. Hunter ◽  
James Woodcock ◽  
Kieran Turner ◽  
...  
Keyword(s):  
Road Traffic ◽  
Statistical Significance ◽  
Evidence Base ◽  
Time Of Day ◽  
Contributory Factor ◽  
Speed Limit ◽  
Volume Data ◽  
Speed Limits ◽  
Traffic Speed ◽  
The City

Objectives Traffic speed is important to public health as it is a major contributory factor to collision risk and casualty severity. 20mph (32km/h) speed limit interventions are an increasingly common approach to address this transport and health challenge, but a more developed evidence base is needed to understand their effects. This study describes the changes in traffic speed and traffic volume in the City of Edinburgh, pre- and 12 months post-implementation of phased city-wide 20mph speed limits from 2016–2018. Methods The City of Edinburgh Council collected speed and volume data across one full week (24 hours a day) pre- and post-20mph speed limits for 66 streets. The pre- and post-speed limit intervention data were compared using measures of central tendency, dispersion, and basic t-tests. The changes were assessed at different aggregations and evaluated for statistical significance (alpha = 0.05). A mixed effects model was used to model speed reduction, in the presence of key variables such as baseline traffic speed and time of day. Results City-wide, a statistically significant reduction in mean speed of 1.34mph (95% CI 0.95 to 1.72) was observed at 12 months post-implementation, representing a 5.7% reduction. Reductions in speed were observed throughout the day and across the week, and larger reductions in speed were observed on roads with higher initial speeds. Mean 7-day volume of traffic was found to be lower by 86 vehicles (95% CI: -112 to 286) representing a reduction of 2.4% across the city of Edinburgh (p = 0.39) but with the direction of effect uncertain. Conclusions The implementation of the city-wide 20mph speed limit intervention was associated with meaningful reductions in traffic speeds but not volume. The reduction observed in road traffic speed may act as a mechanism to lessen the frequency and severity of collisions and casualties, increase road safety, and improve liveability.

Impact of road traffic emissions on air quality of the Lisbon region

2000 ◽  
Vol 34 (27) ◽  
pp. 4683-4690 ◽  
Author(s):  
C Borrego ◽  
O Tchepel ◽  
N Barros ◽  
A.I Miranda
Keyword(s):  
Air Quality ◽  
Road Traffic ◽  
Traffic Emissions ◽  
Road Traffic Emissions

Impact on air quality of measures to reduce CO2 emissions from road traffic in Basel, Rotterdam, Xi'an and Suzhou

2014 ◽  
Vol 98 ◽  
pp. 434-441 ◽  
Author(s):  
M.P. Keuken ◽  
S. Jonkers ◽  
H.L.M. Verhagen ◽  
L. Perez ◽  
S. Trüeb ◽  
...  
Keyword(s):  
Air Quality ◽  
Co2 Emissions ◽  
Road Traffic

VALORIZATION OF THE URBAN ENVIRONMENT OF SOUTH SERBIA FROM THE AIR QUALITY ASPECT

2018 ◽  
Vol 28 (4) ◽  
pp. 1329-1333
Author(s):  
Miodrag Šmelcerović
Keyword(s):  
Air Pollution ◽  
Air Quality ◽  
Urban Environment ◽  
Pollution Sources ◽  
Anthropogenic Sources ◽  
Anthropogenic Factors ◽  
Limit Values ◽  
Cause And Effect ◽  
Sources Of Pollution

The protection of the environment and people’s health from negative influences of the pollution of air as a medium of the environment requires constant observing of the air quality in accordance with international standards, the analysis of emission and imission of polluting matters in the air, and their connection with the sources of pollution. Having in mind the series of laws and delegated legislations which define the field of air pollution, it is necessary to closely observe these long-term processes, discovering cause-and-effect relationships between the activities of anthropogenic sources of emission of polluting matters and the level of air degradation. The relevant evaluation of the air quality of a certain area can be conducted if the level of concentration of polluting matters characteristic for the pollution sources of this area is observed in a longer period of time. The data obtained by the observation of the air pollution are the basis for creation of the recovery program of a certain area. Vranje is a town in South Serbia where there is a bigger number of anthropogenic pollution sources that can significantly diminish the air quality. The cause-and-effect relationship of the anthropogenic sources of pollution is conducted related to the analysis of systematized data which are in the relevant data base of the authorized institution The Institute of Public Health Vranje, for the time period between the year of 2012. and 2017. By the analysis of data of imission concentrations of typical polluting matters, the dominant polluting matters were determined on the territory of the town of Vranje, the ones that are the causers of the biggest air pollution and the risk for people’s health. Analysis of the concentration of soot, sulfur dioxide and nitrogen oxides indicates their presence in the air of Vranje town area in concentrations that do not exceed the permitted limit values annually. The greatest pollution is caused by the soot content in the air, especially in the winter period when the highest number of days with the values above the limit was registered. By perceiving the influence of natural and anthropogenic factors, it is clear that the concentration of polluting matters can be decreased only by establishing control over anthropogenic sources of pollution, and thus it can be contributed to the improvement of the air quality of this urban environment.

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