the noise level in db during day for residential area shall be
Noise regulation Care must be taken in writing a subjective noise provision so that it overcomes the objections listed above. Care must be taken when writing an objective noise provision to make sure that the sound levels are physically realizable. For example, requiring the maximum sound level of an automobile to be 40 dB(A) or the maximum sound level in a residential zone to be 30 dB(A) opens the provision to an enforceability challenge