The article explains that air quality in public transport is mainly influenced by the depth and design of stations, ventilation systems and emissions from vehicles.[5] He states that the highest concentrations of pollution are often found in deep underground stations and in poorly ventilated areas.[5] It emphasizes the importance of effective mechanical ventilation, filtration and appropriate airflow direction to reduce particulate and gas concentrations.[5] The text also points out that switching from diesel to electric sets can significantly reduce passenger exposure to harmful substances such as black carbon.[5] The authors recommend systematically evaluating air quality when planning and reconstructing stations and including it in the design of infrastructure and operating procedures.[5] The article also points out that the improvement of air quality in public transport is of direct importance for the protection of the health of passengers and workers of transport enterprises.[5]