While Japan supports this idea basically,

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While Japan supports this idea basically, Informal Document No. GRRF-67-35 (67th GRRF, 2-5 February 2010, agenda item 9(f)) Proposal for Alignment procedure using RRC value among Technical Services　　 Background The EC proposal contains the provisions on technical services inter-laboratory comparison testing and machine alignment so as to minimize variances in the measurement results between technical services. While Japan supports this idea basically, ・The alignment procedures in the EC proposal seem to be lacking, ・Current test procedures specified in ISO28580 are not enough to keep the accuracy among each technical service test sites.

Japan proposal Japan proposes to insert TSs Alignment procedure of RRC standard value as the following slides

Higher RRC Alignment tyre Lower RRC Alignment tyre ①　Decide two Specific Alignment Tyres ( Para. 3) H ：Higher　RRC L ：Lower　RRC ②　Measurement of alignment tyres 　　　 (using same batch tyre) at Technical Services (TSs) Technical Services Higher RRC　Alignment tyre Lower RRC　Alignment tyre 10.3 7.0 11.0 7.2 10.2 6.8 Average 10.5 TS: A B C H L A B Adopting average value as ‘Standard Value’ C

Higher RRC Alignment tyre Lower RRC Alignment tyre ③　Calibration Formula Transforming each site’s measurement value to calibrated value by using the correlation line which is calculated from the standard values. A 7 10.5 10.3 Measurement Value Tested Tyre Calibrated value Measurement value in each site 7.2 7 10.5 11.0 B Calibrated value Measurement value in each site Technical Services Higher RRC Alignment tyre Lower RRC Alignment tyre 10.3 7.0 11.0 7.2 10.2 6.8 Standard Value 10.5 C 6.8 7 10.5 10.2 Calibrated value Measurement value in each site A B C

9.12 9.00 A ③ Calibration Formula If the measurement value is 9.00, （Example of transformation measurement value to calibration value） Approximation line A 10.5 9.12 7 7 10.3 Calibration Formula: 9.00 Calibration value (Evaluation value) = (1.0606 × Measurement value) – 0.4242 If the measurement value is 9.00, then the evaluation value is 9.12

Conclusion By adopting the alignment procedures among Technical Services proposed by Japan, it will be possible equally to compare the compliance test results among different Type Approval Authorities.