but there is growing interest in understanding the environmental and health impacts of these emissions. When a vehicle brakes, especially in the case of traditional friction brakes, tiny particles known as brake dust are released into the air. This dust is primarily composed of materials like metals (such as copper, iron, and zinc), rubber, and other compounds that wear off from the brake components and wheels.
These particles can contribute to air pollution and may have various adverse effects on human health and the environment as they are small enough to be inhaled and can penetrate deep into the respiratory system. Research is ongoing to assess the exact composition of these brake wear particles and their potential toxicity. Some studies have indicated that these particles can contribute to respiratory and cardiovascular problems, and there is concern about their impact on urban air quality, especially in areas with high traffic volumes.
In addition to brake dust, other sources of particulate matter from vehicles include tire wear and engine exhaust. These sources collectively contribute to the burden of particulate matter in the atmosphere, which is linked to various health issues, making it crucial for scientists and public health officials to study and mitigate these emissions effectively. Solutions could range from improving braking technologies (such as the use of better materials that produce fewer particles) to implementing stricter regulations on emissions from road traffic.