This standard stipulates the basic principles and main measures for preventing and controlling various types of urban dust pollution, as well as the sampling methods and limiting standards for road dust load. This standard applies to all types of construction sites in urban planning areas, paved and unpaved roads, squares and parking lots, various open-air storage yards, freight yards and mining quarries, bare soil floors in urban areas, material mixing, loading and unloading, and transmission Prevention and control of pollution caused by dust generated in transportation and other places and activities.