National Institute of Metrology, Quality and Technology - Inmetro issued Ordinance 231, 18 May 2021 that: Approves the consolidation of conformity assessment requirements for helmets for drivers and passengers of motorcycle and similar. Inmetro Ordinance No. 231 revokes: I - Ordinance Inmetro No. 94, of 3 August 1999, published in the Brazilian Official Gazette of 6 August 2020, section 1, page 56; II - Ordinance No. 456, of 1 December 2010, published in the Official Gazette of 3 December 2010, section 1, page 136; III - Ordinance Inmetro No. 374, of 17 July 2012, published in the Official Gazette of 20 July 2012, section 1, page 111; IV - Ordinance Inmetro No. 503, of 10 October 2012, published in the Official Gazette of 16 October 2012, section 1, page 75; V - Ordinance Inmetro No. 93, of 9 February 2015, published in the Official Gazette of 11 February 2015, section 1, page 71; VI - Ordinance Inmetro No. 456, of 14 October 2019, published in the Official Gazette of 17 October 2019, section 1, page 46; VII - Ordinance Inmetro No. 321, of 15 October 2020, published in the Official Gazette of 15 October 15, 2020, section 1, page 42;