Road traffic noise

Top PDF Road traffic noise:

Quantification of the exposure and effects of road traffic noise in a dense Asian city: a comparison with western cities

Quantification of the exposure and effects of road traffic noise in a dense Asian city: a comparison with western cities

noise of 60–64 dB, and a much lower proportion to the lower levels (<55 dB). We have explained this as a conse- quence of the high-rise built form of Hong Kong where there is both high population and high traffic density. The exposure-annoyance response relationship for road traffic noise in Hong Kong falls well within the tolerance limits of the Miedema and Oudshoorn [18] synthesized exposure- annoyance curve for the percentage of the population highly annoyed with road traffic noise. Fit within a toler- ance interval, rather than a confidence interval, is appropri- ate in comparing the exposure-response relationship from a single new study with the results of a prior synthesis of exposure-response relationships. The percentages of the Hong Kong population who reported they were highly sleep disturbed by road traffic noise also closely follows the exposure-response relationship for high self-reported sleep disturbance based on the pooled data used by Miedema and Vos [26]. There has been a Western bias, and a temperate-climate bias, in the studies used in prior meta- analyses of human responses to road traffic noise. How- ever, the exposure-response relationships for annoyance and self-reported sleep disturbance reported from the high-density, high-rise, sub-tropical city of Hong Kong are not inconsistent with these. This is an important finding for future urban planning and traffic noise management of many of the projected mega-cities in the world that will be located in non-temperate climatic zones in Asia and else- where and whose urban forms can be expected to reflect that of Hong Kong more than of cities in the west.
Show more

11 Read more

Assessment of the masking effects of birdsong on the road traffic noise environment

Assessment of the masking effects of birdsong on the road traffic noise environment

This study aims to explore how the soundscape quality of traffic noise environments can be improved by the masking effects of birdsong in terms of four soundscape characteristics, i.e., Perceived Loudness, Naturalness, Annoyance and Pleasantness. Four factors that may influence the masking effects of birdsong (i.e., distance of the receiver from a sound source, loudness of masker, occurrence frequencies of masker, and visibility of sound sources) were examined by listening tests. The results show that the masking effects are more significant in the road traffic noise environments with lower sound levels (e.g. <52.5 dBA), or of distance from traffic (e.g. >19 m). Adding birdsong can indeed increase the Naturalness and Pleasantness of the traffic noise environment at different distances of the receiver from a road. Naturalness, Annoyance and Pleasantness, but not Perceived Loudness, can be altered by increasing the birdsong loudness (i.e., from 37.5 to 52.5 dBA in this study). The Pleasantness of traffic noise environments increases significantly from 2.7 to 6.7, when the occurrence of birdsong over a period of 30 s is increased from 2 to 6 times. The visibility of the sound source also influences the masking effects, but its effect is not as significant as the effects of the three other factors.
Show more

19 Read more

Efficient Road Traffic Noise Model for Generating Noise Levels in Indian Scenario

Efficient Road Traffic Noise Model for Generating Noise Levels in Indian Scenario

Noise pollution is excessive, displeasing human, animal or machine-created environmental noise that disrupts the activity or balance of human or animal life. Various problems associated with noise include hearing loss, stress, sleep loss, distraction, lost productivity, masking speeches and a general reduction in the quality of life and opportunities for Tranquillity [6][5]. In addition, there are various studies carried out on road traffic noise pollution, which results in severe health problems such as, physical and psychological, irritation, human performance and actions [2][08], hypertension, heart problems, tiredness, headache and sore throat respectively [09]. India been a developing country is under a constant threat of it.. Migration of people, expanding cities, development of infrastructure, population explosion and urbanization are the factors which played a key role in motorization and thus, increasing the levels of various pollution.
Show more

5 Read more

Evaluation of Road Traffic Noise Pollution in Quetta (Pakistan)

Evaluation of Road Traffic Noise Pollution in Quetta (Pakistan)

Noise pollution is the consequence of urbanization and industrialization and is considered as major problem of urban areas. The most important factors raising noise pollution in urban areas include vehicular traffic, neighborhood electrical appliances, TV and music systems, public address systems, and railway and air traffic. Increase in noise level, across the world, has motivated the researchers of the world to this study the problem and its impact on the environment. Also, researchers have reported that the road traffic noise is the leading source of noise in urban areas [1]. Noise pollution is not only the growing problem of developing countries but also of the developed countries. According to researchers, over 130 million people in Europe suffer from exposure to noise levels above 65 dB(A) [2].
Show more

8 Read more

Effect of Road Traffic Noise Pollution in Cuddalore Town: A Case Study

Effect of Road Traffic Noise Pollution in Cuddalore Town: A Case Study

Abstract: The paper suggests that vulnerable institutions like schools and hospitals should be located about 50m away from the roadside unless any special arrangement to alleviate sound is used. Noise measurements were taken at seventeen chosen areas with high population density, heavy traffic, commercial and residential buildings. At each sampling site six readings were taken after an interval of every 45 minutes in June 2012. Average, maximum and minimum values were calculated and compared with standards prescribed by the Central Pollution Control Board. Noise pollution was measured and analyzed and it was noticed that the maximum average of noise level was measured. The major contribution of the traffic noise, towards overall noise pollution scenario, is a well-known established fact. Traffic noise from highways creates problems for surrounding areas, especially when there are high traffic volumes and high speeds. Vehicular traffic noise problem is contributed by various kinds of vehicles like heavy, medium trucks/buses, automobiles and two wheelers. Amongst, noise pollution is an important type, which causes more annoyance and health problems to the human beings. The present work discusses the fundamentals of acoustics and analysis of vehicular traffic noise. The vehicles represent the most important noise source. It was estimated to about 80% from road vehicles. Road traffic noise is one of the most widespread and growing environmental problems in urban areas. The impact of road traffic noise on the community depends on various factors such as road location and design, land use planning measures, building design, vehicle standards and driver behavior. In the study area 17 locations are identified to measure noise level. By using sound level meter noise levels are measured at different peak sessions i.e. morning, afternoon and evening.
Show more

12 Read more

PEDESTRIAN RESPONSE TO ROAD TRAFFIC NOISE FOR MEDIUM SIZE CITY IN INDIA

PEDESTRIAN RESPONSE TO ROAD TRAFFIC NOISE FOR MEDIUM SIZE CITY IN INDIA

As per FHWA guidance (December 2011) basically highway traffic noise depends on volume of traffic, speed of the traffic and the number of trucks in the flow of traffic. Highway noise consists of total noise produced by all the moving vehicles on the highway which depends on the individual vehicles, type of the vehicle, mode of operation, characteristics of the vehicle flow and the relative proportions of the vehicle types included in the flow (Subramani et al., 2012). Traffic is a major source of noise pollution in Delhi and was surveyed by Singh and Davar (2004) using questionnaire survey. The design of urban noise surveys should take into account that the underlying structure of urban noise is largely determined by the disposition of transportation, and in particular, road traffic, noise sources (Brown and Lam, 1987). Effect of traffic noise can be classified into three categories such as subjective effect (annoyance, disturbance, dis-satisfaction and noisiness), behavioral effect (interference with sleep, speak or any general task) and physiological effects (fright phenomena). For a long period of exposures to noise may produce deafens and further continuous noise causes cardiovascular effects, increases blood pressure and heart rates (Marathe, 2012). Pathak et al. (2008) studied that 85%
Show more

8 Read more

Road traffic noise and registry based use of sleep medication

Road traffic noise and registry based use of sleep medication

In the present study, the association between noise and medication use was slightly more pronounced for the summer season than for the total year. This can be seen in context with a previous study that found that noise annoyance was more frequently reported in the summer season than during the winter season [24]. Fur- ther, we found that the association between noise and sleep medication use during the summer season was stronger among those sleeping with the bedroom win- dow open, than for the total study population. In the Nordic countries, it is more common to keep the bed- room window open during summer than other parts of the year, which may explain why we did not see a similar association for the total year. Among those sleeping with the bedroom window closed we observed a negative as- sociation, indicating a protective effect. When stratifying on window opening and closing among those having the bedroom facing a road, this negative effect was even fur- ther strengthened. The explanation may be that the dif- ference in indoor and outdoor nighttime road traffic noise is likely to be larger when the bedroom is facing a road compared to a shielded side. In contrast, a study by Babisch and co-workers [46] found that individuals keeping the bedroom window closed were more annoyed by noise than those keeping the window open. Accord- ing to the authors’ interpretation, window closing served as an indicator of perceived annoyance rather than a modifier reducing annoyance. However, a similar effect of window position was not found for the association be- tween road traffic noise and hypertension [46]. Never- theless, by keeping the bedroom window closed, the indoor level from outdoor road traffic noise will be re- duced considerably. The conflicting results regarding the effect of window opening and closing habits on noise and health associations may reflect the complexity of such possible coping mechanisms, and that the effect on, or of such strategies may differ depending on the health outcome under study.
Show more

12 Read more

Road traffic noise and children’s inattention

Road traffic noise and children’s inattention

mothers categorized as unexposed to rail traffic noise had residential address outside a radius of 700 m from a rail- way line and 300 m for trams and metros, since outside these radii, the rail traffic noise is either nonexistent or is so low that it is masked by other noise sources. The noise exposure assessment was based on input data for the years 2011 and 2006 and included data on topography, building polygons, traffic counts (but estimations for smaller roads without counts), estimated values for 24 h traffic distribu- tion (75% day, 15% evening and 10% night for highways, and 65%, 20% and 15% for municipal roads), signed speed, information on noise barriers, and ground surface (hard or soft). The search radius of 1000 m was used for high- ways, and 500 m for municipal roads. Residential exposure to rail traffic noise was modeled separately and in a similar way as road traffic noise. For rail traffic, rail time tables were used to obtain information on traffic volume and diurnal distribution of traffic.
Show more

14 Read more

Mathematical Modeling For The Prediction Of Road Traffic Noise Levels In Tirupati Town

Mathematical Modeling For The Prediction Of Road Traffic Noise Levels In Tirupati Town

Abstract: Noise can have negative impact on health. Hearing damage, annoyance, sleep disturbance, high blood pressure, poor cardiovascular health is all linked to community noise. Children, people with existing physical and mental illness and elderly people are most susceptible to community noise. High level of noise from sources such as busy traffic can adversely affect the health of the people living near road highways. It is therefore desirable to model a road traffic noise that predicts well the traffic noise near highways so that the people living near highways who are highly exposed by everyday traffic noise can be protected from noise exposure to some extent . Measurement of noise level ( dB(A) ) by noise analyzer will be conducted on road segment of Tirupati town at different locations. In the present paper a road traffic noise prediction model for Indian conditions is developed using regression analysis which is based on Microsoft Excel. Data collected has been analyzed and compared with the values predicted by analytical models . After comparison of results it was observed that Developed Model could be satisfactorily applied for Tirupati town conditions as they give accepted results with a good value.
Show more

8 Read more

Modelling Of Road Traffic Noise

Modelling Of Road Traffic Noise

Road traffic noise is the biggest corridor problem and the most intrusive and annoying form of noise pollution. The growth in vehicle population aggravated the issue. Heavy trucks, buses, auto rickshaws, two wheelers and other automobiles contribute to the vehicular noise in heterogeneous traffic conditions. In developed countries, the only concern is the homogenous traffic which can be tackled with ease. To develop a transport system which is sustainable and environmentally friendly, it is necessary to model different traffic parameters. This helps to identify various traffic problems in advance, so that preventive and mitigation measures can be adopted for improving the transportation system to make it sustainable. It is identified that vehicular noise has a supremacy over all other adverse impacts of traffic, as it affects both the physiological and psychological well-being of peoples exposed to it. Prolonged exposure to traffic noise causes acute and chronic impacts on people. Other than damaging the hearing capacity of people, it may lead to mental illness, behavioral problems and can damage heart, lungs and kidney which can be fatal.
Show more

6 Read more

Evaluation and Analysis of Road Traffic Noise on a National Highway

Evaluation and Analysis of Road Traffic Noise on a National Highway

Noise is a common environmental pollutant in nearly all urban communities. Noise can be emitted from various sources such as aircraft, road traffic, railways, construction, factories, etc. Among these, road traffic is a major source of noise in the urban areas contributing to 55% of the total noise. Social surveys conducted in various cities throughout the world indicated that traffic noise is the major source of nuisance and annoyance [1,2].Social survey conducted in various cities throughout the world indicated that traffic noise is the main source of nuisance and annoyance [3,4].The effect of noise depends on various factors such as time duration, noise sound level, distance from the source, etc. The health impact associate with the noise pollution on human well-being is done by various researchers [5, 6, 7, 8]. The CBCB of India in its notification for noise has laid down the ambient noise standards [9]. FHWA model was found to be suitable for the prediction of noise in India within a fair degree of accuracy.
Show more

9 Read more

Performance Analysis of Road Traffic Noise by Using Computer Aided Modelling

Performance Analysis of Road Traffic Noise by Using Computer Aided Modelling

Noise is one of the environmental pollutants that is encountered in daily life. The exposure to noise from highway, affects more people than noise from any other source [1]. It is not at all surprising that the adverse impact from highway noise is one of the major concern to planners, regulatory agencies, and effected individuals and communities. Several state agencies have implemented regulations that specify procedures to conduct noise studies. These regulations led to the advancement of computerized method for predicting highway noise [2]. Surface transport noise is not a new problem. “In the twentieth century, New York was reported to be the noisiest city of the world probably because of its elevated railways”. In 1929, a noise abatement commission was appointed to study the noise pollution in New York City. In Great Britain, a committee on noise for the operation of mechanically propelled vehicles was appointed in 1934 and recommended legislation to sound level limits for vehicles [3]. The well known Wilson committee report on noise drew attention to the serious problem of road traffic in Britain in 1936. In US quantitative limits for vehicle noise were first introduced by individual states beginning in the year 1965 with New York.
Show more

8 Read more

The use of artificial intelligence to
predict road traffic noise

The use of artificial intelligence to predict road traffic noise

Strategy for modelling complex situations The development of a grid-based neural network noise prediction model for a site-specific 2dimensional situation is quite straightforward, only [r]

82 Read more

Road Traffic Noise Pollution and its Management in Tanjong Malim, Perak

Road Traffic Noise Pollution and its Management in Tanjong Malim, Perak

The increasing number of motorized vehicles in the roads especially in the populated area are the major contributor for noise pollution. This research aimed to study the problem of traffic noise in the town of Tanjong Malim, Perak Darul Ridzuan. For this purpose, a total of nine randomly selected research stations covering the main streets, business center, school and the populated areas were randomly selected. Measurement and observation of level of noise parameters have been using the equipment called Integrating Sound Level data logger Extech Instruments Model 407780. The observations made were at least ten minutes for every observation time for the morning (between 8.00 am-10.00 am), noon time (between 12.00 noon-2.00 pm), evening (between 5.00pm-7.00pm) and night (between 10:00 pm-12.00malam) which covers weekdays and the weekends. The results showed that all value at the all stations is exceeded the standards set by the Department of Environment Malaysia; the noise level 65 dBA for the daytime and 55 dBA for the night-time. Passage area in front of North Gate UPSI recorded the existing Leq 76.6 dBA the highest existing Leq values compared to other nine stations on weekdays observation. Weekend observations recorded value almost similar to the days of the highest noise level recorded in the same way in front of the main door UPSI (74.8 dBA). Various other factors also contribute to traffic noise in the town of Tanjong Malim, such as the proximity of a close to main roads, the higher number of heavy vehicles routing, the estate of vehicle engine and so on. Various mitigation measurement should be considered to negotiate this problem including the sound management aspect, awareness campaign through education, physical construction of natural fortress such as by planting trees between the noise provenance and receiver, efficient traffic management and by law enforcement.
Show more

12 Read more

The comparison of road traffic noise levels from prediction models and actual noise measurement

The comparison of road traffic noise levels from prediction models and actual noise measurement

4.3.5 The comparison of the accuracy provided by each prediction model over the study sites With regard to the above results, when considermg the absolute noise levels, T-Noise and STAMS[r]

124 Read more

Analysis Of Road Traffic Noise At Express Highway

Analysis Of Road Traffic Noise At Express Highway

In world health organization (WHO) statements, “large city noise is considered to be the third most hazardous pollution”. Researches study noise problems in cities and try to find solution for these problems. At the time air pollution in incurs a large bill to pay when it comes to stop the escalation of global warming, urban noise pollution is in fact another complex issue for which academic community does not see possible short term plans to save the situation. It is only long term strategic planning that might realize some recovery to the current increasing levels of noise. However, transportation works is seen to a expanded and accelerated in the term of amount and variety, it is impractical to hinder traffic in main arterial for decrease traffic flow but it might be possible to detour traffic or to construct new roads, or other forms of end–of-pipe solutions. Noise will be a larger and serious social problem in the future if effective precautions are not taken accordingly.
Show more

7 Read more

Genesis of Road Traffic Noise on Human Health

Genesis of Road Traffic Noise on Human Health

Further, we look at whether wellsprings of noise pollution follow up on male populace and female populace in an unexpected way. Table 1 likewise introduces figures and % time of male and female respondents impacted by different wellsprings of noise. There are checked differences in people impacted by noise from religious limit, vicinity, vehicles and shockingly, women are more affected by it over the men masses. As to source i.e. enhancer there is checked qualification in to some degree more % of male masses appeared differently in relation to female people.
Show more

6 Read more

REVIEW ON ROAD TRAFFIC NOISE POLLUTION

REVIEW ON ROAD TRAFFIC NOISE POLLUTION

Transportation sector is one of the main contributors to noise in the urban areas. The traffic noise environment in Balasore, a city of Orissa, India in terms of standard noise offensives, community response and community health effects are worked out in the present study. A preliminary survey adopting questionnaire method amongst 212 local inhabitants also carried out to gather secondary information about the suffering of noise related physical condition problems. Noise pollution is not properly recognized despite the fact that it is steadily growing in Developing countries like India and in particular in the state Orissa. It is well conventional now that noise is a potential hazard to health, communication and pleasure of social life. Transportation sector is one of the main contributors to noise in this urban area. The present study explicitly reveals that the noise levels are greater than the permissible limit in all the six locations including 24 sites. Of noise pollution associated with the proposed project should be established
Show more

6 Read more

Vol 60, No 4 (2017)

Vol 60, No 4 (2017)

An action plan is designed to manage the noise issues in a particular region in order to ensure the necessary comfort for the inhabitants and to protect quiet areas against excessive noise. Two action plans have been developed on the basis of strategic noise maps: in 2010 and 2014, including proposals to reduce the exposure of inhabitants, which can be achieved by 2020. Table 1 contains a selection of these proposals, strictly related to road traffic noise, and their state of completion [11], [12].
Show more

6 Read more

A model for Traffic noise prediction in heterogeneous traffic conditions

A model for Traffic noise prediction in heterogeneous traffic conditions

This paper describes a traffic noise prediction methodology for heterogeneous traffic conditions. Traffic noise characteristics in cities of developing country like India are slightly varied by virtue of the fact that the composition of the traffic is heterogeneous associated with variance of road geometry and varying density of the buildings on the either side of the road. Traffic noise prediction models developed on the basis of homogeneous traffic are not apt to predict the actual noise levels for Indian countries. A new model has been developed in this study considering different parameters such as traffic volume, composition of traffic, speed, horn using effect, number of lanes, road width, road gradient and local metrological conditions.
Show more

5 Read more

Show all 10000 documents...