¿More toxic than diesel? A surprising finding about vehicular pollution
Vehicle pollution has been an increasing concern in recent decades, especially in relation to diesel vehicles, which have been pointed out as major culprits of toxic emissions. However, a recent study revealed a surprising finding that challenges this narrative: particles from brake pads could be even more toxic than the gases emitted by diesel engines. This discovery highlights the urgent need to broaden our understanding of sources of pollution generated by cars and to pay attention to an aspect that has gone unnoticed for a long time.
A recent study has revealed that emissions from cars, specifically the particles from brakes, are much more harmful to health than the emissions from diesel engines. This research raises questions about the current strategies of the automotive industry to mitigate pollution. The ultrafine particles generated by brake wear could be a significant factor in the global public health crisis, as they contribute to air pollution affecting millions of people each year.
Air pollution and its impact on public health
Air pollution is responsible for the premature death of approximately seven million people annually worldwide. This serious health issue is associated with various pollutants, including fine particles (PM2.5), nitrogen oxides (NOx), and ozone (O3). Although the focus has largely been on vehicle emissions, such as exhaust from combustion vehicles, non-exhaust emissions are beginning to receive the attention they deserve.
Non-conventional emissions: a hidden risk
The term “non-exhaust emissions” refers to particles generated by the mechanical wear of a moving vehicle. These particles are produced by friction between tires and the road, the wear of brake pads, and the erosion of roadways. Recently, it has been discovered that this type of pollution can exceed the quantity of traditional emissions from engines, particularly in urban areas where traffic is constant.
Brake pads: a new focus of attention
Brake pads, especially those without asbestos, which were developed after the ban on this material due to its dangers, are at the center of this controversy. Although they were believed to be safer, a new study has shown that the particles generated by brake pads can be even more toxic than those from diesel engines. The particles resulting from friction during braking contain heavy metals and other extremely harmful compounds for health.
The role of copper in the toxicity of emissions
An important finding from the research indicates that one of the key factors in the toxicity of these particles is copper. The study found that neutralizing the copper present in these particles significantly reduces their toxicity. Given that a large portion of the copper in the air originates from the wear of brakes and tires, it is crucial to reconsider how these components are managed within the automotive sector to protect public health.
Actions and regulations to mitigate vehicle pollution
As the magnitude of this issue is recognized, various regions, including Europe, are beginning to implement new regulations aimed at limiting brake dust emissions. Starting in 2026, Euro 7 emission standards will include, for the first time, limits on the number of particles generated by brake wear. This action is a crucial step towards the total reduction of vehicle pollution.
Aware of the urgency of this issue, researchers and lawmakers must work together to address not only engine emissions but also all sources of vehicle pollution. The health of millions of people and the well-being of the environment depend on swift and effective action.
Reflections on the new threat of vehicle pollution
The recent discovery regarding pollution produced by brake particles raises serious questions about how traffic-related pollution is measured and regulated. While the automotive industry has focused on controlling vehicle exhaust emissions, it is clear that other pollutants, especially those generated by mechanical wear, are equally concerning.
This finding underscores the need to pay attention not only to exhaust gases but also to the fine particles present in the air we breathe, which may be more harmful and are significantly contributing to environmental pollution. Assessing all sources of vehicle pollution is essential to safeguard public health and ensure a more sustainable future.
As emission regulations evolve, it is crucial that they adapt to address this new threat effectively, thereby contributing to a healthier environment for all.
