The League of Ireland has been given the green light to trial concussion substitutes, with the new law coming into effect for the President's Cup final between Shamrock Rovers and Dundalk on Friday, 12 March.
The FAI confirmed on Thursday evening that their application to trial concussion subs this season has been approved by the International Football Association Board [IFAB].
Concussions subs will be permitted in the SSE Airtricity Premier and First Divisions, the SSE Airtricity Women’s National League and the men’s and women’s FAI Cup competitions.
In the event of an actual or suspected concussion, the player in question will be permanently removed from the match. That player will be replaced so that the team doesn't suffer a numerical disadvantage.
Teams will be allowed up to two permanent concussion subs in a game.
Earlier this month the Premier League began using concussion substitutes for the first time.
League of Ireland Director Mark Scanlon said: "This approach prevents a player sustaining another concussion during the match as multiple head-injury incidents can have very serious consequences.
"It also sends a strong message that, if in doubt, the player is withdrawn but there is no numerical or tactical disadvantage to either side by prioritising the player’s welfare. The rule reduces the pressure on medical personnel to make a quick assessment and is simple to operate."
The FAI's medical director Dr Alan Byrne has produced an information video for players, coaches and supporters ahead of the trial period.
"The season-long trial is part of the knowledge gathering around the whole area of concussion," added Dr Byrne.
"We hope to gain some knowledge around the types of injuries that can cause concussion, help build our knowledge base and put us in a better position to make decisions around the welfare and safety of our players."