The mean equivalent continuous noise levels (Leq) at workplace environment
of traffic police are of 87.5dB(A) with the noise dose received in the range 96–998.6 per day; a
noise dose above 100 is considered as high (Bruel & Kjaer Limited, 1999) More importantly, at
the personal noise exposure level, hearing threshold shifts were found to be highly significant
at low, mid and high binary frequencies for both ears