According to the "People's Republic of China *** and the State Urban Area Noise Standard" clearly stipulates the maximum environmental noise limit of the city's five types of areas:
1, sanatorium area, high-level villa area, high-level hotel area, daytime 50 decibels, 40 decibels at night;
2, to the residential, cultural and educational institutions mainly in the area, the daytime 55 decibels, nighttime 45 decibels;
3, commercial, industrial mixed areas, 60 dB daytime, nighttime 45 dB;
3, residential, commercial, industrial mixed areas, 60 dB daytime, nighttime 45 decibels. 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).