51. On behalf of GRPE, the GRPE Chair made a tribute to Mr. Shrikant Marathe (Vice-Chair of GRPE, India), Mr. Masahiko Sakai (JASIC), Mr. Juergen Stein (OICA) and Mr. Meinrad Signer (OICA), who would no longer attend GRPE sessions, acknowledging their considerable contributions to the activities of the group.