Note and disclaimer:
At its September 2014 session, the Working Party on Noise (GRB) adopted an amendment proposal to insert a new Appendix 5 to Annex 6 to Regulation No. 117 "Tyre rolling resistance, rolling noise and wet grip" (ECE/TRANS/WP.29/2015/5). The new appendix introduces a method of measuring and data processing for rolling resistance when the tyre deceleration value is obtained in differential form dω/dt. To facilitate the calculations and data processing, the experts from the Russian Federation have developed a "Deceleration Calculator" and agreed to have it published on this website. This software is provided "as is". The WP.29 secretariat has no control over the content of this program and claim no responsibility as to its integrity and quality.