Investigating of environmental traffic noise modelling by using FHWA TNM in Tehran township


  • Zeinab Mohamady University of Tehran
  • Alireza Noorpoor University of Tehran
  • Majid Bayatian Islamic Azad University



Leq, noise prediction, noise measurement


There are several noise modeling software packages in order to predict noise level, each of them has different accuracy in different country. The present study was undertaken to analyze Traffic Noise Model software package (TNM) for two large highway in Tehran township. Firstly, field measurement for equivalent noise level (Leq) was carried out by sound level meter(SLM), then Leq prediction by the software was done. Finally, the results of the two previous steps were compared. the mean deviation of the results for sound levels below 80 dB was 0.33 dB, but for values further than 80 dB, the deviation was high. due to the obsolescence of a large number of the trucks inside Iran, new trucks instead of using software-defined trucks, were defined. With this change, the modeling and measurement results were more coordinated. The coefficient of determination (R2) increased from 0.4915 to 0.7312.


ABBASPOUR M., GOLMOHAMMADI R., NASSIRI P., MAHJUB H. (2006) An investigation on time-interval optimisation of traffic noise measurement. Journal of Low Frequency Noise, Vibration and Active Control, 25(4):267–273.

ABBASPOUR M., KARIMI E., NASSIRI P., MONAZZAM M. R., TAGHAVI L. (2015) Hierarchal assessment of noise pollution in urban areas - A case study. Transportation Research Part D: Transport and Environment, 34:95–103.

AGARWAL S., SWAMI B.L. (2010) Noise annoyance under interrupted traffic flow condition for Jaipur city. International Journal of Applied Science and Engineering, 7(2): 159–168.

ALESHEIKH A., OMIDVARI M. (2010) Application of GIS in urban traffic noise pollution. International Journal of Occupational Hygiene, 2(2):79–84. Issn.2008-5435

ALSAIF K.A., FODA M.A. (2015) Development of noise maps of great city of Riyadh by using LimA. International Journal of Environmental Science and Development, 6(8):6–9.

ARANA M., SAN MARTIN R., NAGORE I., PEREZ D., SAN MARTIN M. (2008) Noise map from two computer programs . Analysis of noise map of the agglomeration of Pamplona ( Spain ). In Acustica (pp. 1–11). Coimbra. Issn.2008-2022


and non-auditory effects of noise on health. The Lancet, 383(9925):1325–1332.

BERNDT A. (2004) Uncertainties in environmental noise modeling uncertainties of existing noise models with special regards to the models used in Australia. In Proceedings of Acoustics, 443–446. Issn.4023-5800.

COVACIU D., FLOREA D., TIMAR J. (2015) Estimation of the noise level produced by road traffic in roundabouts. Applied Acoustics, 98:43–51.

DE DONATO S., MORRI B. (2001) A statistical model for predicting road traffic noise based on poisson type traffic flow. Noise Control Engineering Journal, 49.

DEBNATH A., SINGH P.K. (2018) Environmental traffic noise modelling of Dhanbad township area – A mathematical based approach. Applied Acoustics, 129: 161–172.

EDUARDO P., FIEDLER K., HENRIQUE P., ZANNIN T. (2015) Evaluation of noise pollution in urban traffic hubs — Noise maps and measurements. Environmental Impact Assessment Review, 51:1–9.

GARG N., MAJI S. (2014) A critical review of principal traffic noise models : Strategies and implications. Environmental Impact Assessment Review, 46:68–81.

GOINES L., HAGLER L. (2007) Noise pollution: A modern plague. Southern Medical Journal, 100(3):287– 294.

MEHRAVARAN H., ZABANI S., NABI B.G.R., GHOUSI R., KESHAVARZI S.H. (2011) Noise pollution evaluation method for identification of the critical zones in Tehran. International Journal of Environmental Research, 5(1):233–240.

NEGA T., YAFFE N., STEWART N., FU W.H. (2013) The impact of road traffic noise on urban protected areas: A landscape modeling approach. Transportation Research Part D: Transport and Environment, 23:98–104.

RIVAS S., HERNANDEZ R., CUETO J.L. (2003) Evaluation and prediction of noise pollution levels in urban areas of Cdiz (Spain). The Journal of the Acoustical Society of America, 114(4):2439.

SHU N., COHN L.F., HARRIS R.A., KIM T.K., LI W. (2007) Comparative evaluation of the ground reflection algorithm in FHWA Traffic Noise Model (TNM 2.5). Applied Acoustics, 68(11):1459–1467.

STEELE C. (2001) A critical review of some traffic noise prediction models. Applied Acoustics, 62:271–287.

SWINBURN T.K., HAMMER M.S., NEITZEL R.L. (2015) An economic assessment of U.S. environmental noise as a cardiovascular health hazard. American Journal of Preventive Medicine, 49(3):345–353.

YI P., PAPARAJU S. (2013) Field investigation of traffic noise by pickup trucks and sports utility vehicles. Procedia – Social and Behavioral Sciences, 96(Cictp):2939–2944.

YUCEL M., COLAKKADIOG˘LU D. (2017) Modeling of Tarsus-Adana-Gaziantep highway-induced noise pollution within the scope of Adana city and estimated the affected population. Applied Acoustics, 115:158–165.




How to Cite

Mohamady, Z., Noorpoor, A., & Bayatian, M. (2021). Investigating of environmental traffic noise modelling by using FHWA TNM in Tehran township. EQA - International Journal of Environmental Quality, 45, 42–48.