70. WP.29 considered a draft new UN Regulation under agenda item 4.13.1. (ECE/TRANS/WP.29/2026/36) and recommended its submission to AC.1 for voting, subject to the following amendment:
Annex 1, Appendix 1,amend to read:
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| Brake enclosure design | ||
| Reynolds number at the entrance of the enclosure [—] | .. | |
| The airspeed at each position of the plane C used for the speed uniformity verification does not vary by more than ±35 per cent of the arithmetic mean of all measurements for the setup’s minimum operational airflow | .. | |
| The airspeed at each position of the plane C used for the speed uniformity verification does not vary by more than ±35 per cent of the arithmetic mean of all measurements for the setup’s maximum operational airflow | .. |