scholarly journals Modelling of Noise Pollution Due to Heterogeneous Highway Traffic in India

2019 ◽  
Vol 20 (1) ◽  
pp. 22-39 ◽  
Author(s):  
Aditya Kamineni ◽  
Sunil Kumar Duda ◽  
Venkaiah Chowdary ◽  
C.S.R.K. Prasad
Keyword(s):  
Traffic Noise ◽  
Noise Pollution ◽  
Heterogeneous Traffic ◽  
Noise Prediction ◽  
Highway Traffic ◽  
Noise Levels ◽  
Speed Variation ◽  
Proposed Model ◽  
Traffic Speed ◽  
The Difference

Abstract Compared to homogeneous traffic flow, traffic speed variation is drastic with the involvement of heterogeneity. With an intent of studying the negative upshot of fluctuating speeds of heterogeneous traffic on the environment, the current paper is the outcome of the research done on various highways located in the states of Andhra Pradesh and Telangana in India, with an objective of developing a comprehensive noise prediction model by taking into account the traffic and roadway factors. Quantified noise levels [Leq (dBA) and L10 (dBA)] revealed that for the traffic speed variation of 10 to 95 kmph, the traffic noise levels were significantly affected by the variations in the proportion of the vehicle. On a specific note, the proposed model can be effectively used for the highway traffic noise prediction especially for the heterogeneous traffic, as the difference between the measured and predicted noise levels are within 1 to 10 dB (A).

Noise reduction of enhanced acoustic balconies on a high-rise building block

2021 ◽  
Vol 263 (1) ◽  
pp. 5327-5334
Author(s):  
SK Tang ◽  
Rudolf YC Lee
Keyword(s):  
Noise Reduction ◽  
Natural Ventilation ◽  
Traffic Noise ◽  
Elevation Angle ◽  
Noise Levels ◽  
Indoor Space ◽  
New Device ◽  
Air Inlet ◽  
The Difference ◽  
The Impact

A new device called 'enhanced acoustic balcony' is installed in a new housing estate in Hong Kong. It is intended to help reduce the impact of traffic noise on the residents. This balcony is basically an enlarged form of a plenum window and with three openings. Apart from the outdoor air inlet, there is the balcony door and a side-hung window on the interior balcony wall for natural ventilation of the indoor space. Sound absorption of NRC 0.7 is installed on the balcony ceiling and its sidewall facing the incoming traffic noise and an inclined panel is installed outside the balcony to provide noise screening. A site measurement of its noise reduction is carried out in the present study in a newly completed housing block. A 28 m long loudspeaker array is used as the sound source. The indoor noise levels are measured according to ISO standard. The results show that the difference between indoor and outdoor noise levels in the presence of this balcony form varies over a relatively narrow range between 10 to 13 dBA for an elevation angle from 25 to 60 deg. There is a weak increase of the noise level difference with elevation angle.

Ray Acoustics Approach to Quantitative Prediction of Highway Traffic Noise

2010 ◽  
Author(s):  
Liming Dai ◽  
Huay Seen Lee
Keyword(s):  
Prediction Model ◽  
Traffic Noise ◽  
Environmental Noise ◽  
Quantitative Prediction ◽  
Highway Traffic ◽  
Noise Levels ◽  
Modeling Approach ◽  
Highway Noise

A Highway Prediction Model (HPM) using the ray acoustics modeling approach is developed in this research. The HPM model can be used to quantitatively predict the environmental noise levels on highways of different pavements. Comparison between the measured noise levels using the SPB method and predicted noise levels with the model developed shows that the prediction model established is reliable for estimating highway noise in Canada.

scholarly journals Traffic Noise Levels in the City of Banja Luka

2018 ◽  
Vol 16 (1-2) ◽  
Author(s):  
Predrag Ilić ◽  
Dragana Nešković Markić ◽  
Ljiljana Stojanović Bjelić
Keyword(s):  
Noise Level ◽  
Environmental Problem ◽  
Traffic Noise ◽  
Noise Pollution ◽  
Environmental Noise ◽  
Noise Levels ◽  
Great Problem ◽  
Health Institutions ◽  
Banja Luka ◽  
The City

Noise pollution, as a major environmental problem, is present in Banja Luka. The measured values exceeded the level of noise allowed, which is a great problem. Evaluation of the noise levels was carried out in the streets in the area with health institutions. Objectives of this research were to evaluate the environmental noise pollution in the City of Banja Luka due to traffic noise and to compare the measured noise levels in the city with legislation and to establish the connection between noise and the number of vehicles. Correlation between the noise level and number of vehicles was positive and significant during the study period (r=0.89). It is confirmed that, with the increase of the number of vehicle, the noise level increases, i.e. the decrease in the number of vehicle decreases the noise level.

scholarly journals PERFORMANCE OF FHWA MODEL FOR PREDICTING TRAFFIC NOISE: A CASE STUDY OF METROPOLITAN CITY, LUCKNOW (INDIA)

Transport ◽  
2009 ◽  
Vol 24 (3) ◽  
pp. 234-240 ◽  
Author(s):  
Arvind Kumar Shukla ◽  
Sukhvir Singh Jain ◽  
Manoranjan Parida ◽  
Jyoti Bhushan Srivastava
Keyword(s):  
Heavy Traffic ◽  
Traffic Noise ◽  
Uttar Pradesh ◽  
Noise Pollution ◽  
Noise Levels ◽  
Metropolitan City ◽  
Northern India ◽  
Road Geometry ◽  
Total Vehicle ◽  
Populated State

Industrial and transport activities are the two major sources of noise pollution in any metropolitan city. Lucknow city, the capital of the largest populated state Uttar Pradesh in India has an area of 310 sq. km and is rapidly growing as a commercial, industrial and trading centre of northern India. The population of Lucknow city as per census 2001 is 22.45 Lacs. It is expected that by the year 2021 it will make 45 Lacs. The total vehicle population in Lucknow city on 31 March 2008, was nearly 1 million with almost 80% two wheelers, 12% cars, 1.36% three wheelers, 0.45% buses etc. A study was carried out to assess the existing status of noise levels and its impacts on the environment with a possibility of further expansion of the city. Ambient noise levels were measured at different locations selected on the basis of land use such as silence, heavy traffic and residential and commercial zones. It was found that noise levels at all selected locations were much higher (75–90 dB) than the prescribed limits. The observed traffic volume and data on road geometry were used to predict noise levels using Federal Highway Administration Agency (FHWA) model and the calculated noise levels were compared with the observed levels for checking the suitability of this model for predicting the future levels. It was established that the results obtained by FHWA model were very close to the observed noise levels and that the model was suitable to be used for other similar metropolitan cities in India.

scholarly journals Investigation of the Effect of Traffic Noise in Inspection of Urban-Level Noise: A Noise Analysis in Konya - Nalcaci Street

2021 ◽  
Vol 8 (1) ◽  
pp. 91-112
Author(s):  
Zeynep Ümmühatun Özen ◽  
Mustafa Tosun ◽  
Enes Yasa
Keyword(s):  
Noise Analysis ◽  
Traffic Noise ◽  
Noise Pollution ◽  
International Standards ◽  
Noise Levels ◽  
Urban Centers ◽  
Limit Values ◽  
Effective Measure ◽  
Urban Level ◽  
Penetration Loss

In this study, the effects of noise, due to the increase in population in urban centers, industrialization and land traffic, are evaluated on human health, indoor life standards, and auditory comfort. For this purpose, noise levels were recorded in Ahmet Hilmi Nalcaci Street, which is one of the densest streets of Konya. The recordings were performed at 14 different stations, three times a day and for 14 days. A "Testo 815" brand device was used for measurement and recording. The results of the measurements were evaluated according to international standards and domestic regulations, taking into account the situations where windows and doors, which constitute integrity and blanks in the envelope of a structure, are open. It was determined that the noise levels recorded at the stations are above the discomfort threshold. Settlement-and architecture-level measures to reduce and control noise are suggested in the study. It was determined that the most effective measure in this context would be isolation in structure envelopes. Types of walls generally used in the buildings around the street, which is the subject of the study, were determined and the sound penetration loss values for these walls were given. The sound penetration loss values were also compared to indoor noise limit values in certain measurement points and excessive noise values were presented in the study. Keywords: Noise pollution, traffic noise control, environmental noise, urban level noise, Testo 815

scholarly journals ORGANIZATION OF EXPERIMENTAL RESEARCH DETERMINATION OF TRANSPORT NOISE LEVELS AT THE FIRST STAGE OF MOTORING

2021 ◽  
Vol 3 (163) ◽  
pp. 206-210
Author(s):  
A. Reshetchenko
Keyword(s):  
Experimental Research ◽  
Residential Buildings ◽  
Traffic Noise ◽  
Control Point ◽  
Noise Pollution ◽  
Anthropogenic Factors ◽  
Residential Areas ◽  
Noise Levels ◽  
Pollution Levels ◽  
Noise Characteristics

Monitoring studies are considered as a system of environmental monitoring of anthropogenic factors, based on the legislation of Ukraine, monitoring of physical impacts, including noise levels, are necessary and important in terms of monitoring the air of populated cities. The article is devoted to the substantiation of the need to organize monitoring observations of the levels of noise pollution caused by the operation of vehicles in the residential areas of populated cities. Scientific and methodological approaches to the organization of experimental research to determine noise levels as the first stage of the monitoring system have been developed. The state normative-legal base is analyzed, it is revealed that the organization of experimental researches of noise characteristics of the transport streams going along apartment houses, isn't fixed at the legislative level. The system of monitoring noise pollution levels should consist of the following main stages: 1) data collection (measurement of noise levels in the field); 2) processing of the received data (calculation of equivalent and maximum noise levels on the basis of the received field observations); 3) compilation of databases; 4) detection of discomfort zones (comparison of the obtained equivalent and maximum noise levels with the allowable ones). Unified schemes of location of the control point for instrumental measurements of traffic noise levels, depending on the category of roads adjacent to residential buildings, are proposed. This approach takes into account all possible layout options of the urban area, which allows to identify noise-absorbing properties of green areas of roadside space and provide environmentally friendly noise protection solutions to reduce man-made pollution and quantify the noise load in residential areas affected by the road. The results of approbation of experimental measurements according to the offered schemes which give the chance of revealing of uncomfortable zones in territories of inhabited building for acceptance of the further ecologically safe noise protection practical decisions are resulted.

Anthropogenic Noise Mapping of a Periurban Natural Park on the Coastal Area in the SW of Spain: Case Study of Bird's Ecosystem Protection

2019 ◽  
Vol 105 (6) ◽  
pp. 1015-1025
Author(s):  
José Luis Cueto ◽  
David Bienvenido-Huertas ◽  
Francisco Fernández-Zacarías ◽  
Ricardo Gey ◽  
Ricardo Hernández-Molina
Keyword(s):  
Ad Hoc ◽  
Methodological Approach ◽  
Traffic Noise ◽  
Noise Pollution ◽  
Small Population ◽  
Noise Levels ◽  
Noise Mapping ◽  
Natural Park ◽  
Methodological Guidelines

This article presents a methodological approach to try to respond to some of the protection and management needs against the noise of a peri-urban natural park. The methodology presented is based on the generation of "ad hoc" noise maps. To analyze its possibilities and the limits of use, a coastal park surrounded by a densely populated area in the southwest of Spain is used as a case study. In this study, birds in their diverse ecosystems are the main target noise receiver of the study. The source of noise pollution considered is the traffic noise of the highways and the urbanized areas surrounding the park. However, the methodology can be extrapolated to any source of noise and other protection figures. An adequate diagnosis of the environmental noise would help to overcome the supposed incompatibility between the preservation of nature and the tourist exploitation of natural spaces. With this in mind, it has also been proposed as target noise receivers, the ornithologists and visitors who wish to become bird-watchers and bird-listeners. To this end, it has been proposed to produce noise maps with certain methodological guidelines that fit on a case-by-case basis. Several heights are used in this paper, adapting the map to noise receivers. With the same purpose, noise level maps in octave bands were developed. The tonal frequencies of interest are those that the birds use in their songs (according to the species, normally between 2 and 8 kHz). The maps have been contrasted with noise measurements carried out throughout the park. The study shows that in the areas most exposed to the noise of the Rio San Pedro and the university campus, noise levels at 2 kHz can reach 74 dB during the peak traffic hours. In addition, a large percentage of the area of both areas is affected by noise levels that exceed 50 dB (100% and 44% respectively). We are also concerned that a small population of birds has been counted in these areas based on preliminary observations at peak traffic times. The results can help the decision-makers to evaluate how traffic noise invades different ecosystems and where it can mask the sound of birds.

Characterization of Traffic Noise and Honking Assessment of an Indian Urban Road

2018 ◽  
Vol 17 (04) ◽  
pp. 1850031 ◽  
Author(s):  
Ritesh Vijay ◽  
T. Chakrabarti ◽  
Rajesh Gupta
Keyword(s):  
Traffic Noise ◽  
Traffic Monitoring ◽  
Traffic Volume ◽  
Time Interval ◽  
Highway Traffic ◽  
Noise Levels ◽  
Additional Noise ◽  
Road Width ◽  
The Impact

To study the traffic noise on an Indian urban highway, traffic noise levels (Leq, Lpeak, Lmax and Lmin), traffic volume, speed and honking incidents were measured in peak traffic hours in the morning and evening. An attempt has been made to characterize the traffic noise including the impact of honking. Honking of horn was positively correlated with Leq and negatively correlated with traffic speed. In case of traffic volume and road width, no significant correlation was established with Leq. Based on the observed honking and Leq in each time interval, statistical analysis was performed for assessing the impact of honking on traffic noise and its estimation through trend analysis. Further, quantification of honking noise was carried out considering frequency analysis of audio spectrum of traffic noise. Both the analyzes confirm the honking contributed an additional noise of 1–4[Formula: see text]dB(A) over and above the traffic monitoring noise. The study suggests that honking noise must be included as a factor while monitoring traffic noise in some places where honking is common practice. This study will help in characterizing the traffic noise and the impact of honking for further abatement studies.

INVESTIGATING URBAN TRAFFIC BASED NOISE POLLUTION IN THE CITY OF KIRIKKALE, TURKEY

Transport ◽  
2008 ◽  
Vol 23 (3) ◽  
pp. 273-278 ◽  
Author(s):  
Ali Payidar Akgüngör ◽  
Abdulmuttalip Demirel
Keyword(s):  
Regression Analysis ◽  
Traffic Noise ◽  
Linear Regression Analysis ◽  
Noise Pollution ◽  
Urban Traffic ◽  
Coefficient Of Determination ◽  
Noise Levels ◽  
Limit Values ◽  
Arcview Gis ◽  
The City

The study presents an investigation into traffic based noise pollution in the city of Kirikkale, Turkey. For this purpose, traffic noise levels were measured at 15 intersections across the city during three peak times ‐ morning (08:00–09:00), noon (12:30–13:30) and evening (17:00–18:00) hours. The comparison of Leq values against the limit values of the Turkish Noise and Control Regulations for Settlement Zones showed that Leqvalues exceeded the limits at all stations. A linear regression analysis performed between the Leq and logarithm of total traffic volume (log Q) produced a coefficient of determination of 0.52. A multi regression analysis carried out between the Leq and four different vehicle types resulted in a correlation coefficient of 0.74. The correlation matrix indicated that the highest correlation was found for trucks/buses with r = 0.92. The spatial maps of traffic noise created by the Kriging method under ArcView GIS displayed that there seemed to be significant differences in the spatial variation of traffic noise across the city. In order to reduce traffic based noise levels within the city some useful suggestions were presented.

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