What Is the Most Polluting Part of Your Car? You Probably Guessed Wrong
Researchers investigating the impact of these spare parts discovered that they could cause severe damage to lung tissues.
Many believe that the exhaust is the main culprit in vehicle-generated air pollution, but recent studies highlight an entirely different source – one that is not related to fuel or gas emissions at all.
A study conducted at the University of Southampton in the UK reveals that one of the most significant pollutants produced by vehicles is brake dust. Tiny particles released during braking may pose a health risk to humans, sometimes even more than diesel particles.
Researchers examining the effect of brake particles on human lung cells found that certain materials in brake pads, particularly copper, could cause severe lung tissue damage. Cells exposed to brake dust containing copper showed clear signs of inflammation and metabolic process disruptions, which could lead to long-term respiratory problems and serious diseases.
Contrary to popular belief, electric vehicles are not free from air pollution. In fact, their heavy weight could lead to increased brake wear, resulting in more brake dust production. Studies show that brake dust accounts for about 55% of the pollutant particles originating from traffic in urban roads – much higher than exhaust emissions.
To reduce pollution, some countries have started limiting the use of copper in brake pads, but most regulations still focus on exhaust emissions, neglecting this form of pollution. Researchers recommend expanding oversight to include other pollution sources, like brake and tire wear, and to develop innovative solutions for brake pads free of harmful materials.
The transition to electric vehicles is an important step in the fight against air pollution, but the new research proves it is not the only solution. Addressing all pollution sources is the key to maintaining clean air and public health.
