The article examines the level of pollution of the territory of the city of Kiev with nitrogen oxides, which is mainly formed by traffic flows on the main roads of the city. According to statistics, on average, one passenger car emits about one kilogram of various toxic and carcinogenic substances into the atmosphere per day. For the human body, nitrogen oxides are even more harmful than carbon monoxide. The general nature of the influence varies depending on the content of various nitrogen oxides: NO, NO2, N2O3, N2O4. Nitric oxide relaxes vascular smooth muscles, is involved in protection against pathogens, is a neurotransmitter, regulates programmed cell death and proliferation, and plays an important role in the secretory and reproductive system.
Measurement of the concentration of nitrogen oxides for three days in the center of Kiev on the territory of the park named after Taras Grigorievich Shevchenko, which is surrounded by highways, showed the highest dynamics of changes in the content of the pollutant.
The obtained results of calculating the pollution by nitrogen oxides near the main roads are almost ten times different from the data obtained by remote sensing (satellite) and measured at stationary stations, which indicates the excessive anthropogenic load of transport on the environment, especially in the center. Kiev and the need for additional control at points close to the main roads. When deciding on the placement of highways in the city plan, it is necessary to take into account the direction and speed of the wind. if the width of the roadside contamination with a pollutant crosses the border of the residential area, the value of the excess of the MPC standard in the air of the settlement at the calculated point on the border of the residential area should be calculated and protective measures should be provided.