28. GRSP agreed to keep the current definitions of “Fire” and “Explosion” in ECE/TRANS/WP.29/2022/71 unchanged (submitted for consideration and vote at the June 2022 sessions of WP.29 and AC.1). GRSP also agreed that these definitions would be first discussed by the informal working group on UN GTR No. 20, Phase 2 of EVS and that feedback from that discussion would be presented at its December 2022 session.