Further to the FIA’s 8859-2024 standard, there are higher levels of approval that fall within the ‘Advanced Helmets’ standards. They are FIA 8860-2018 and 8860-2018ABP.
The full face helmets that are FIA 8860-2018 ABP approved have a noticeably smaller eye port to increase the strength of the helmet. Currently the 8860-2018 ABP standard is only required in Formula 1, F2, F3 and Formula E, due to the open cockpit nature of competition.
Championships like Supercars, GT, WRC and WEC do not require the ABP standard, but 8860-2018 does have to be used.