Assessment of honking impact on traffic noise in urban traffic environment of Nagpur, India

Background: in context of increasing traffic noise in urban india, the objective of the research study is to assessnoise due to heterogeneous traffic conditions and the impact of honking on it.method: traffic volume, noise levels, honking, road geometry and vehicular speed were measured on nationalhighway, major and minor roads in nagpur, india.results: initial study showed lack of correlation between traffic volume and equivalent noise due to some factors,later identified as honking, road geometry and vehicular speed. further, frequency analysis of traffic noise showedthat honking contributed an additional 2 to 5 db (a) noise, which is quite significant. vehicular speed was alsofound to increase traffic noise. statistical method of analysis of variance (anova) confirms that frequent honking(p < 0.01) and vehicular speed (p < 0.05) have substantial impact on traffic noise apart from traffic volume andtype of road.conclusions: the study suggests that honking must also be a component in traffic noise assessment and toidentify and monitor “no honking” zones in urban agglomerations.