Applicable to both international and domestic competition from the beginning of the next respective season in the northern and southern hemispheres, the extended protocol will enable the referee to consult with the TMO to review up to two phases (rucks or mauls) before the ball is grounded in the act of scoring.
The referee may also call on the TMO to advise on incidents of possible foul play. Sanctioned by the IRB Rugby Committee, implementation follows extensive Union consultation and evaluation of the initial trials of extended TMO protocol variants in England's Aviva Premiership and South Africa's Absa Currie Cup by the independent IRB Laws Representative Group.
IRB Rugby Committee Chairman Graham Mourie said: "It was a difficult task for the Laws Representative Group to determine which variation of the protocol should go forward for global trial as both had significant merits and both have been embraced by match officials, coaches and players."
"However, after extensive analysis, the group felt that the Currie Cup variant which encapsulates two prior phases of play without a major time impact is sufficient to address match-affecting incidents that are currently not captured by the TMO protocol as it appears in Law."
"We have a clear way forward and it is now important that we educate our match officials to ensure excessive recourse to the TMO must be avoided for the sake of continuity and, to that end, match officials will be reminded of that and assessed accordingly."
The global trial is in addition to the global trial of six Law amendments approved by IRB Council in May, from the start of the next season in each hemisphere, and forms a package of amendments aimed at enhancing key areas of the Game.
An evaluation of the global Law amendment trials will be reviewed by the LRG and Rugby Committee in 2013 prior to the IRB Council making a decision at its May 2014 Meeting whether to approve or reject the amendments as Law.