According to national standards, the regional background noise on both sides of road traffic trunk lines, inland waterway crossing urban areas and railway main and secondary trunk lines crossing urban areas is 70 decibels during the day and 55 decibels at night. If the environmental noise exceeds the standard, citizens can call to complain.
In areas with residential areas and cultural and educational institutions, the living environment in rural areas is 55 decibels during the day and 45 decibels at night. Commercial and industrial mixed zone is 60 decibels during the day and 50 decibels at night.