Geoinformation support of acoustic pollution of the city near traffic flows

Summary Acoustic pollution is one of the most important problems of our time. Due to the growth of the number of cars, the growth of transport mobility of the population, the industrialization of the urban economy, the contacts between the technogenic environment of the city and the natural environment are expanding. Acoustic pollution in Europe kills about 12,000 people prematurely each year, and 48,000 develop coronary heart disease. High noise levels also cause increased irritability, and often sleep disturbances. Traditionally, the main source of noise is transport: road, rail, aviation. Studies have shown that traffic noise makes up 80% of all external noise in Kyiv. Cars, which are sources of low-frequency noise with high permeability, make a significant contribution to the overall sound power of traffic noise. An increase in the number of freight and public transport by 13% in traffic flows increases noise by 1 dB. In the main territories of Kyiv, traffic noise lasts 24 hours a day. The WHO determines an acceptable noise level of 40 decibels, and a critical level that will already harm a person 55 decibels. This paper investigates the levels of acoustic load in standardized octave bands with geometric mean frequencies 63; 125; 1000; 2000 and 4000 Hz.