Whether by road, rail, water or air: public transport is a good thing, a cheap and efficient way to travel. But often, especially at peak times of commuter or tourist traffic, the trams, buses, metros or trains are occupied to the last seat and many people share the limited breathing air with all its components, even those that we don't want to have in the air - Pollutants (VOC's), viruses, bacteria,  CO2 and odors that are often very unpleasant. These conditions are ideal growth conditions for germs in general, but especially during flu season, a virus spreads quickly and easily in this crowded, crowded space.

Since efficient ventilation is often impossible under such conditions and a normal ventilation system only circulates the air, air ionization is the only sensible answer to prevent unnecessary infections, protect the health of passengers and ensure pleasant air quality. This is also the reason why many public means of transport have been equipped with bioclimatic air-hygiene devices in recent years and their high efficiency has been proven by measurements of the air quality in the room. For example, Covid-19 viruses were reduced by 99.7%!