133. The representative of the United States of America informed AC.3 that NHTSA was preparing an NPRM on the transposition of Phase 1 of the UN GTR, expected for the end of the 2016. On behalf of former sponsor and co-sponsor countries of Phase 1 of the UN GTR, he also added that their number would likely increase for Phase 2. He also announced that, as the programme of work of the Agreement is expected to be finalized in a near future, an informal proposal of authorization to develop Phase 2 of the UN GTR would then be presented for approval at AC.3.