scholarly journals Modeling the Influence of Roundabout Deflection on Its Efficiency as a Noise Abatement Measure

2021 ◽  
Vol 13 (10) ◽  
pp. 5407
Author(s):  
Saša Ahac ◽  
Maja Ahac ◽  
Josipa Domitrović ◽  
Vesna Dragčević
Keyword(s):  
Road Traffic ◽  
Traffic Noise ◽  
Noise Model ◽  
Road Traffic Noise ◽  
Design Phase ◽  
Noise Levels ◽  
Noise Abatement ◽  
Early Design ◽  
The Road ◽  
Abatement Measure

Challenges that emerge in roundabout design are mostly related to space constrictions and provision of appropriate deflection around the central island. This can result in speed profiles on roundabouts that might reduce their potential as a noise abatement measure. Because of this, the impact of a roundabout on noise levels and its applicability as a traffic calming device and a noise abatement measure should be investigated in the early design stage, by modeling noise levels. In this paper, the following hypothesis is tested: vehicle movement trajectories, defined during the fastest path performance check in roundabout early design phase, can be used as the road traffic noise sources when modeling noise at roundabouts using static noise model. This procedure (1) simplifies the preparation of the noise model, (2) results in a model that is closer to the real-world in terms of traffic flow conditions, (3) allows the noise calculations in the early stages of roundabout design, and (4) includes the influence of roundabout deflection on calculated noise levels. The abovementioned simplifications of the road traffic noise modeling process should encourage the optimization of roundabout geometry in terms of its noise reduction capabilities in the preliminary design phase of these intersections.

Investigation of Ways to Reduce Road Traffic Noise of Apartment Complexes Using Computer Simulation

2016 ◽  
Vol 851 ◽  
pp. 673-679
Author(s):  
Jun Oh Yeon ◽  
Kyoung Woo Kim ◽  
Kwan Seop Yang
Keyword(s):  
Computer Simulation ◽  
Road Traffic ◽  
Traffic Noise ◽  
Road Traffic Noise ◽  
Noise Levels ◽  
The Road ◽  
Apartment Complex ◽  
Noise Barrier ◽  
Continuous Noise ◽  
Apartment Complexes

In the present study, computer simulations were carried out using Sound Plan in order to investigate whether road traffic noise levels in two apartment complexes were less than the outdoor noise criteria [65 dB(A)] The sound isolation tunnel was found to be most effective way for noise reduction in the two apartment complexes, although they each have different building arrangements and road traffic. A noise barrier with a height of more than 12 m was required to meet the outdoor noise criteria in apartment complex A. The continuous noise barrier with a height of more than 10 m and enough distance from the road traffic were required in apartment complex B.

scholarly journals Perhitungan Kebisingan pada Rumah Sakit dan Sekolah Akibat Arus Lalu Lintas di Jalan L.L. R.E. Martadinata Kota Bandung (Hal. 133-143)

2018 ◽  
Vol 4 (1) ◽  
pp. 133
Author(s):  
Heru Sanjaya ◽  
Pertiwi Supriyani ◽  
Angga Marditama Sultan Sufanir
Keyword(s):  
Road Traffic ◽  
Traffic Noise ◽  
Noise Model ◽  
Road User ◽  
Road Traffic Noise ◽  
The Road ◽  
Model Based ◽  
Standard Grade

ABSTRAKPeningkatan volume kendaraanberdampak terhadappeningkatan kebisingan lalu lintas yang menimbulkangangguan pendengaran bagi pengguna jalan dan masyarakat disekitarnya.Tujuan penelitian ini yaitumenghitung kebisingan pada kawasan rumah sakit dan sekolah akibat arus lalu lintas di Jalan L.L. R.E. Martadinata Kota Bandung dengan menggunakan Metode Bina Marga Pd.T-10-2004-B tentang Prediksi Kebisingan Akibat Lalu Lintas dengan ModelCalculation of Road Traffic Noise (CoRTN).Dari hasil perhitungan diperoleh tingkat kebisingan di kawasan RSIA Limijati sebesar 62,46 dBA (weekdays) dan 62,01 dBA (weekend), sedangkan tingkat kebisingan dikawasan Sekolah Taruna Bakti sebesar 66,06 dBA (weekdays) dan 66,21 dBA (weekend). Dapat disimpulkan bahwa tingkat kebisingan di kawasan RSIA Limijati dan Sekolah Taruna Bakti sudah melebihi baku mutu yang diijinkan menurut Keputusan Menteri Negara Lingkungan Hidup No. 48/MENLH/11/1996 yaitu sebesar 55 dBA, sehingga untuk menurunkan tingkat kebisingan perlu dilakukan mitigasi dampak kebisingan akibat lalu lintas jalan.Kata kunci: kebisingan pada kawasan rumah sakit, kebisingan pada kawasan sekolah, ModelCalculation of Road Traffic Noise ABSTRACTThe increase ofvehicle volume is impacted to the increase of traffic noise which is The increase ofvehicle volume is impacted to the increase of traffic noise which is caused sense of hearing interruptionto the road user, pedestrian, and the society in that area. This research’s purpose is to calculate the traffic noise in hospital and school area which is caused by the traffic in Jalan L.L. R.E. Martadinata, Kota Bandung. The method used is Bina Marga Pd.T-10-2004-B about The Prediction of Noise caused by Traffic using Calculation of Road Traffic Noise (CoRTN) Model. Based on the calculation, the number of traffic noise in RSIA Limijati area for about 62,46 dBA (weekdays) and 62,01 dBA (weekend), while Taruna Bakti School for about 66,06 dBA (weekdays) and 66,21 dBA (weekend).In conclusion, the number of traffic noise in RSIA Limijati and Taruna Bakti School area exceed the standard grade permission from Keputuan Menteri Negara Lingkungan Hidup No. 48/MENLH/11/1996 is about 55 dBA. For decreasing the number of traffic noise, it is a must for doing mitigation toward the effect of noise which is caused by traffic.Keywords: The traffic noise in hospital area, the traffic noise in school, Calculation of Road Traffic Noise Model

Road Traffic Noise Levels at Different Types of Residential Areas in Nibong Tebal, Penang

2019 ◽  
Vol 11 (1) ◽  
Author(s):  
Herni Halim ◽  
◽  
Nur Fatin Najiyah Hamid ◽  
Mohamad Firdaus Mahamad Yusob ◽  
Nur Atiqah Mohamad Nor ◽  
...  
Keyword(s):  
Road Traffic ◽  
Traffic Noise ◽  
Road Traffic Noise ◽  
Residential Areas ◽  
Noise Levels ◽  
Different Types

Acoustic Modeling of Meteorological Effects on Roadway Noise

2021 ◽  
pp. 036119812199458
Author(s):  
Roger L. Wayson ◽  
Kenneth Kaliski
Keyword(s):  
Road Traffic ◽  
Traffic Noise ◽  
Model Development ◽  
The United States ◽  
Noise Model ◽  
Road Traffic Noise ◽  
Atmospheric Conditions ◽  
Noise Propagation ◽  
Transportation Research ◽  
Meteorological Effects

Modeling road traffic noise levels without including the effects of meteorology may lead to substantial errors. In the United States, the required model is the Traffic Noise Model which does not include meteorology effects caused by refraction. In response, the Transportation Research Board sponsored NCHRP 25-52, Meteorological Effects on Roadway Noise, to collect highway noise data under different meteorological conditions, document the meteorological effects on roadway noise propagation under different atmospheric conditions, develop best practices, and provide guidance on how to: (a) quantify meteorological effects on roadway noise propagation; and (b) explain those effects to the public. The completed project at 16 barrier and no-barrier measurement positions adjacent to Interstate 17 (I-17) in Phoenix, Arizona provided the database which has enabled substantial developments in modeling. This report provides more recent information on the model development that can be directly applied by the noise analyst to include meteorological effects from simple look-up tables to more precise use of statistical equations.

scholarly journals Value for Money in Road Traffic Noise Abatement

2012 ◽  
Vol 48 ◽  
pp. 1366-1374 ◽  
Author(s):  
Ingunn Milford ◽  
Sigve J. Aasebo ◽  
Kjell Strommer
Keyword(s):  
Road Traffic ◽  
Traffic Noise ◽  
Road Traffic Noise ◽  
Value For Money ◽  
Noise Abatement

scholarly journals Road Noise Levels in Urban Environment Compared to Specification Limits. The Case of the City of Larissa, Greece

2020 ◽  
Author(s):  
Emmanouil A. Papadimitriou ◽  
Grigorios P. Papageorgiou ◽  
Nikolaos Alamanis ◽  
Theodosia-Niki Diakosavva
Keyword(s):  
Road Traffic ◽  
Traffic Noise ◽  
Road Traffic Noise ◽  
Noise Levels ◽  
Road Noise ◽  
Greek City ◽  
Limit Values ◽  
High Noise ◽  
Specification Limits ◽  
The City

Greece, as well as other developed countries, is facing the growing problem of road traffic noise. It stands for a severe problem in the urban areas of the country, including the city of Larissa. The root cause is the huge increase in traffic volume and the lack of adequate urban infrastructure planning. Estimation of the level of road traffic noise is usually conducted using acoustic meters. It is widely accepted that most of the cities’ population is exposed to high noise levels due to controversial traffic capacity. Moreover, high noise levels are strongly related to phycological and neurological diseases. Thus, it is of utmost importance, the road noise levels to be lower than dictated by relevant specification limits. To develop better noise-environment policies, relative research should focus on the measurement of in-situ noise levels, so as appropriate for each case corrective measures to be taken. The present paper examines the noise levels of a center road of the 5th Greek city, in terms of population, compared to worldwide adopted noise specification limits. The clear aim stands for finding the percentage of road noise that exceeds commonly accepted threshold values, namely limit values of European Union and World Health Organization. The results of this research strongly indicate that measured noise values override upper limit values in a certain extent.

scholarly journals Rapid Modeling Method for Road Traffic Noise Sources: A case study in Beijing

Noise Mapping ◽  
2015 ◽  
Vol 2 (1) ◽  
Author(s):  
L. Zhu ◽  
X. Li ◽  
C. Jiang ◽  
L. Liu ◽  
R. Wu ◽  
...  
Keyword(s):  
Road Traffic ◽  
Traffic Noise ◽  
Modeling Method ◽  
Model Parameters ◽  
Road Traffic Noise ◽  
Emission Model ◽  
Noise Sources ◽  
The Road ◽  
The Mean ◽  
Rapid Modeling

AbstractBased on the local road traffic conditions in Beijing, China, this contribution proposes a rapid modeling method for road traffic noise sources. Since establishing the standardized experiment fields are expensive, real roads are used to determine the road traffic noise emission model in the method. Due to the similarity in the urban structures in China and Japan, this paper uses the ASJ- 2013 model as a template and replaces its model parameters with the ones output by an optimization program which minimizes the sum of absolute errors between the predicted and the measured LAeq. Real road experiments are conducted to verify the effectiveness and feasibility of the modeling method. The mean error of the model deduced by the method and the ASJ-2013 model is respectively 0.4 dB and 2.6 dB, and the mean absolute error of the two models is respectively 1.1 dB and 2.6 dB. The results of the real road experiments show that the road traffic noise sources deduced by the method are more accurate to conduct local noise prediction than those of other models.

Sign in / Sign up

Export Citation Format

Share Document