首页|Analysis of Noise Descriptors and Traffic Noise Indices in Conjunction with Traffic Flow and Their Correlation in an Urban Traffic Environment
Analysis of Noise Descriptors and Traffic Noise Indices in Conjunction with Traffic Flow and Their Correlation in an Urban Traffic Environment
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Noise levels and traffic flow were recorded simultaneously during the day at 19 locations along the four major arterial roads of the Kurukshetra city in India. The L_(eq,2h) analysis revealed a cyclic pattern with noise crests and troughs over 24 hr, thus identifying the peak and lean noise periods. The day-time and night-time noise levels (L_D and L_N), as well as day-night and day-evening-night average noise levels (L_(DN) and L_(DEN)) exceeded the permissible levels as per Indian and/or WHO guidelines at most of the sites. The noise pollution level (NP) and traffic noise index (TNI) for the day exceeded the permissible limits of 88 dB(A) and 74 dB(A), respectively at all sites. The highly annoyed (HA) persons due to road traffic noise was in the range of 23.40-62.34%. Passenger car unit (PCU)/hr exhibited a very strong correlation with L_(eq,24h), L_(DN) and L_(DEN). The proposed mathematical models revealed a strong logarithmic relationship between them (R~2 = 0.8774 to 0.9309; ε= -00003 to -0.0005; RMSE = 1.07 to 3.92; r = 0.94 to 0.96). Thus, it shows the potential of PCU/hr in predicting standard noise level indices and highly annoyed persons in the case of urban arterial road traffic. The study revealed that high noise levels due to traffic congestion and lack of traffic management in the city have the potential to cause adverse health effects to exposed persons.
Noise levelsEquivalent sound pressure levelsNoise climateTraffic noise indexPassenger car unit
Prateek Bhardwaj、Surinder Deswal
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National Institute of Technology, Department of Civil Engineering, Kurukshetra - 136 119, Haryana, India
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