Noise prediction based on acoustic maps and vehicle fleet composition

Nascimento, Eriberto Oliveira do; Oliveira, Felipe Luz de; Oliveira, Lucas Nonato de; Zannin, Paulo Henrique Trombetta

doi:10.1016/j.apacoust.2020.107803

Cited by 16 publications

(7 citation statements)

References 27 publications

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“…relationship between the geometry of the urban bridge underspace and the noise levels. The situation widely regulated and analysed is the case of traffic noise generated at the level of a communication route [24] - [27] and [31], [32]. However, this work offers one of the first investigations devoted to analyzing the impact of traffic noise on an overpass on the areas below it.…”

Section: Discussionmentioning

confidence: 99%

“…On the other hand, there are studies on the noise generated by open-air concerts and events [29], [30], but there are no clear guidelines on the optimal vibration climate for such openair activities. Furthermore, the available data on the acoustic maps are inaccurate in the context of the presented study, as the measurements of the acoustic maps are carried out at the level of the elevated transport route, not below it [31], [32]. For a newly-designed urban space, to the knowledge of the authors, there are currently no binding legal acts or recommendations, even in the form of standards or recommendations, which would explicitly specify criteria to assess the baseline situation regarding noise and vibration level in underspaces.…”

Section: The Literature Reviewmentioning

confidence: 99%

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The acoustic climate of spaces located under overpasses in the context of adapting them for outdoor public events – a pilot case study

Komarzyńska-Świeściak¹,

Kozlowski

2021

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Due to the current shortage of traditional public space because of its privatization, commercialization, and securitization, there is an urgent need to reclaim areas affected by motorized traffic in the urbanized areas. On the other hand, the process of adapting them for new purposes should be carefully carried out, addressing several issues, among them environmental acoustics. This study is meant to contribute to our understanding of acoustic conditions of a general model of the bridge underspace. Therefore, the aim of the research was to examine the existing acoustic climate by measuring noise levels and comparing them with equivalent acceptable noise levels for the expected type of space development and Noise Rating curves. In this research, a pilot case study approach was used, as measurements were taken for a chosen space located under an elevated road that represents certain criteria set by the researchers. The results allowed us to: (1) verify the relationship between the geometry of the bridge underspace and the noise levels, (2) assess the initial acoustic conditions in terms of possibilities of acoustic adaptation of the examined space for outdoor public events, and (3) formulate hypotheses and preliminary assumptions for the planned further and broader studies of the issues raised in this article. The presented results and their analysis show that it is possible to bring the acoustic conditions in the studied space to the state required for public or cultural meeting spaces. In comparison with earlier findings, the research undertaken appears to be pioneering and the results can be used as valuable input for further research on this topic.

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Section: Discussionmentioning

confidence: 99%

Section: The Literature Reviewmentioning

confidence: 99%

The acoustic climate of spaces located under overpasses in the context of adapting them for outdoor public events – a pilot case study

Komarzyńska-Świeściak¹,

Kozlowski

2021

Bud-Arch

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“…In the context of Latin America, the work of some authors stands out. In Brazil, studies on acoustic comfort and quality of life have been carried out in the following areas (Levandoski and Trombetta Zannin, 2020 ): noise annoyance perception (Paiva et al, 2019 ), the development of noise maps (Kirrian Fiedler and Trombetta Zannin, 2015 ), design of prediction models (Oliveira do Nascimento et al, 2021 ), and the noise generated by different means of transportation (Bunn and Trombetta Zannin, 2016 ). In Chile, studies focus on the elaboration of noise maps (Suárez and Barros, 2014 ), noise mapping methods (Bastián-Monarca et al, 2016 ), road noise estimation (Rey Gozalo et al, 2020 ), and the design of smartphone applications for noise monitoring (Aumond et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Traffic Noise Annoyance in the Population of North Mexico: Case Study on the Daytime Period in the City of Matamoros

et al. 2021

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Aim: The presence of noise in urban environments is rarely considered a factor that causes damage to the environment. The primary generating source is transportation means, with vehicles being the ones that affect cities the most. Traffic noise has a particular influence on the quality of life of those who are exposed to it and can cause health alterations ranging from annoyance to cardiovascular diseases. This study aims to describe the relationship between the traffic noise level and the perceived annoyance in the inhabitants of a city on the Northern Border of Mexico. The work carried out in a city represents the vulnerability characteristics: economic, social, and migratory of its sizable portion of the inhabitants. Due to that, it is impossible to identify precisely the number of residents as the number of vehicles in circulation.Methods: The streets and avenues with an annual average daily traffic of more than 1,000 vehicles were considered for the measurement of traffic noise. The equipment used was a vehicle gauge with non-invasive speed radar; type I integrating sound level meters, with their respective gauges and tripods. A questionnaire was applied to people living within 250 m of the streets and avenues in which the noise was measured.Results: The noise measurement found a parameter of LAeq estimated for 12 h during the day, exceeding 70 dBA. The data received from the questionnaire were statistically tested by using Pearson's correlation tests. A total number of 2,350 people were participated, of whom 1,378 were women (58.6%) and 972 were men (41.4%). The age of participants is ranged from 18 to 75 years. The overall perception of traffic noise annoyance identified that 1,131 participants (48.1%) responded “Yes” as they considered the noise annoying. Participants who responded “No” as well as those who responded “Do not know” resulted in a total of 1,219 people (51.9%).Conclusion: The results show that the population is desensitized to traffic noise and does not perceive it as an annoyance. The flow of vehicles and the type of vehicles are the significant factors for the propagation and increase in the traffic noise levels. Women present a considerable appreciation of traffic noise perception instead of younger people who demonstrate a higher tolerance to high-level exposure. This reflects the lack of information of the population around the noise problem and its effects.

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“…Developing countries are experiencing rapid urbanization that directly and negatively affects their acoustic environment, mainly because of the increase of traffic intensity on urban arterials. Research of noise levels in cities points to the necessity of developing measures concerning its reduction by developing projects still under construction and expansion of residential areas [4]. Also, it is necessary to consider that the untimely introduction of control measures can make them ineffective.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the noise level on arterial streets depending on traffic flow indicators

Mironyuk¹

2021

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The intensity of traffic flows increases every year and intensifies its impact significantly on urban territory's ecologic situation and natural environment. In Ukrainian cities, the growth of noise pollution is quite a topical problem as it has a significant impact on the environment because of the increase in car numbers. Traffic flow intensity and densification of the built-up area cause the increase of the noise level. As analytical methods of calculation of determination of traffic noise level have several disadvantages, then for assessing the level of noise on arterial streets of Lviv city, research is carried out with consideration of traffic flow indicators. One of the critical criteria that have an impact on noise pollution in the urban environment is traffic flow composition. Conducted research indicates that the speed of traffic flow creates significant noise pollution, especially on those streets where cobblestone is a road pavement. Freight and passenger transport that moves along arterial streets causes the increase of noise level and increases its impact on the city territory. On sections of arterial streets in peak periods of the day with high values of volume-capacity ratio and general share of freight and public transport of more than 30% in a flow, the noise exceeds the acceptable norms and has a harmful impact on the environment. That is why it is necessary to assess noise pollution and the development of protection measures from noise during the planning and construction of some urban regions or residential areas. It is established that to lower the noise level on streets, it is necessary to consider existing intersections of arterial streets and the regime of movement on them. To lower transport noise, it is necessary to distribute freight and transit transport by city streets more rationally, use qualitative public transport, and limit the maximal speed regime on city streets. Further research on the road network will provide an opportunity to assess the noise level distribution of traffic flows in Lviv city. It will help to determine the problem places and propose methods of combating traffic noise.

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Noise prediction based on acoustic maps and vehicle fleet composition

Cited by 16 publications

References 27 publications

The acoustic climate of spaces located under overpasses in the context of adapting them for outdoor public events – a pilot case study

The acoustic climate of spaces located under overpasses in the context of adapting them for outdoor public events – a pilot case study

Traffic Noise Annoyance in the Population of North Mexico: Case Study on the Daytime Period in the City of Matamoros

Assessment of the noise level on arterial streets depending on traffic flow indicators

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