The air we breathe inside vehicles can be more harmful than we often realize. Various studies show that air inside cars can have higher concentrations of pollutants than outdoor air, affecting the health of passengers. With the increasing time people spend in vehicles, both in private cars and public transportation, air quality becomes a crucial factor.
Pollutants inside cars
Various volatile organic compounds (VOCs) and aldehydes are often detected inside vehicles. These pollutants can enter the cabin from exhaust gases or be released from materials inside the vehicle, such as plastics, carpets, and adhesives. These contaminants include formaldehyde, toluene, benzene, and other harmful chemicals. Formaldehyde, for instance, is a known respiratory irritant, and high exposure levels can increase the risk of respiratory diseases and cancer.
In Japan, a study found that 58% of monitored vehicles exceeded the recommended levels of total volatile organic compounds (TVOC), representing a health risk, especially in newer cars where these levels can be up to three times higher than in older vehicles.
Air quality in public transport: the case of japan
Japan has implemented strict regulations to control indoor air quality in various spaces, including public transport such as taxis and buses. In these vehicles, constant air quality monitoring is required, using devices like the one shown in the provided image, which measures air purity in real time. These systems give both drivers and passengers a direct reference to the conditions of the air they are breathing.
Additionally, Japan has established environmental quality standards that public transportation vehicles must comply with, controlling particles like PM2.5, which are particularly harmful to the respiratory system. These regulations help ensure a healthier environment for public transport users, especially in cities with high traffic density.
How can we improve air quality in cars?
There are several ways to improve air quality inside vehicles, both private and public:
- Regular ventilation: opening the windows periodically helps reduce the buildup of pollutants.
- Efficient air filters: many modern cars, especially in Japan, are already equipped with filtration systems that can significantly reduce particle levels and other air pollutants.
- Air monitoring: installing devices that continuously measure air quality, as seen in Japanese taxis, can be an effective solution to keeping pollution levels under control.
Conclusion
Air quality inside cars is an issue that should not be ignored, as it has a direct impact on our health. In Japan, monitoring air quality in taxis and other public transport vehicles is a clear example of how technology can help maintain a safer environment for passengers. With appropriate measures, such as proper ventilation and the use of advanced filters, we can significantly improve the air we breathe while traveling.
References:
- OECD iLibrary: Policies and regulatory framework for air quality management in Japan(Site homepage).
- UNEP: Air Quality Policies in Japan(UNEP – UN Environment Programme).
- Ministry of the Environment, Government of Japan(Ministry of the Environment).
(Photo: Air quality monitor in a taxi in Japan)