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Review of the research and conclusions from the study of brake and tyre wear particles. The presentation suggests that at least two methods exist for the measurement of brake wear particles that could be used to establish a harmonized test cycle for use across different markets. Tyre wear presents challenges in distinguishing tyre particles from road particles. The group may inform GRPE that the possibility of a uniform brake wear test cycle exists should the Contracting Parties wish to pursue this.
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