Noise disturbances, 110 will manage. But it is to exceed the limit value can be called noise. p>3, residential, commercial and industrial mixed areas, 60 dB during the day, 50 dB at night;
4, industrial areas, 65 dB during the day, 55 dB at night;
5, road traffic in the city on both sides of the main roads, inland waterways, railroads, major and minor trunk line areas, 70 dB during the day, 55 dB at night, (the night refers to the 22 o'clock to the next morning 6 o'clock).