Brake Dust: A Bigger Threat Than Exhaust?
2025-02-15
New research reveals that tiny particles from brake pads may be more harmful to human health than car exhaust. Researchers found that newer brake pads, containing high levels of copper, caused greater lung cell damage than older asbestos-containing pads. While copper exacerbates asthma, the study also demonstrated that a chemical treatment can mitigate the harm. California and Washington have limited copper in brake pads, but overall brake dust pollution remains largely unregulated. The authors call for targeted legislation to protect public health, noting that electric vehicles' regenerative braking could significantly reduce the problem.