> See if the noise level is outside the norm – For example, if somebody staying in SS2, Petaling Jaya, complains that the new traffic noise level is 65dBA, it’s not outside the norm because even when cars aren’t running, the noise level in the area is already 65dBA. If the noise level goes up by 10dBA because of this new noise source, that source is seen as a disturbance. This is because the noise level in cities are already way above the noise levels set out in the guidelines. > The new noise level is compared with land use – There are different noise limits for low-density, commercial and industrial areas. But nationwide, I think noise is the biggest source of pollution, as it effects everyone.”Road traffic, he says, is the most common noise pollution source because it is the most pervasive.

Source: The Star July 31, 2016 00:00 UTC