Analysis of patterns of pollution of the air in the interior space of vehicles with hazardous substances (nitrogen oxides) during vehicle operation in different weather conditions and in heavy traffic flows

Introduction (problem statement and relevance). The main issue of environmental safety of the country is air pollution on heavily trafficked highways and, respectively, in the interior space of vehicles. Studying of toxic effects of nitrogen oxides NO, NO₂ on a human body is related to the fact that they are one of the main components of vehicle exhaust gases.

The purpose of the studies is to define the nitrogen oxide content in the environment and interior space of the vehicles under test with different engine types throughout the spring–summer–autumn seasons when driving along the developed route under the conditions of heavy traffic flows, and to determine the factors influencing the increased content of nitrogen oxides in the interior space of vehicles with different engine types.

Methodology and research methods. The studies were carried out according to the specially developed and approved procedure throughout the spring – summer – autumn seasons.

Scientific novelty and results. The results of the studies were used at the stage of development of a test method for assessment of vehicle interior air purification systems efficiency within the framework of UNECE Inland Transport Committee activities.

Practical significance. Based on the conducted studies, a conclusion was made on the necessity to include nitrogen oxide NO into the list of pollutants to be limited in the European standard under development.

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