46. Having recalled the submission of GRPE-65-20, WP.29-160-39 and WP.29-161-22 on tyre and brake wear and vehicle indoor air quality, the expert from the Russian Federation introduced GRPE-68-10. He argued that the estimates about tyre and brake wear presented in it are significantly higher than the limits set by the Euro 6 pollutant emission regulations. He underlined that the importance of tyre and brake wear estimated in it is significantly higher than earlier estimates on the subject. He provided insights on the impact of the estimations of the contents of particulate matter within vehicles and in the outdoor air in urban driving conditions, and concluded that increased attention to the equipment of vehicles with instruments improving the indoor air quality needs to be taken into consideration.