When two high-risk tackle technique warnings have been issued, a player will automatically receive a one-match suspension.
World Rugby have introduced a set of law amendments which will be trialled at various tournaments this year in a bid to improve player safety and reduce the risk of injuries.
The trials were approved for the four-year law amendment review cycle that began after the 2019 World Cup following an analysis by the Law Review Group last March and several unions expressed interest in operating one or more of the trials.