Fans attending World Cup matches in Russia won't be left wondering about the reasons behind decisions of the video assistant referee.

After a decision is made using VAR, replays will be shown on giant screens inside the stadiums accompanied by a written explanation.

It's all part of the VAR information system that FIFA unveiled Wednesday .

FIFA will place someone in the VOR (video operations room) who will listen in to the VAR's decisions and communicate them to both TV commentators and stadium personnel operating the giant screens.

"So we will have graphics on the giant screens, we will have replays after the decision on the giant screens, and we will also inform the fans about the outcome of a VAR incident and review," said Sebastian Runge, group leader of football innovation at FIFA.

With the VAR making its tournament debut during the June 14-July 15 World Cup, FIFA is holding its final training camp this month for the 99 match officials -- 36 referees and 63 assistants -- who have been selected to go to Russia.

Thirteen VARs have been pre-selected and are being trained at Italy's Coverciano complex, and FIFA referees chief Pierluigi Collina said more VARs and VAR assistants will be chosen from the 99 match officials.

Three of the 13 VARs come from Italy's Serie A and two from Germany's Bundesliga -- elite competitions that already use video assistants.

The VAR can support the referee in four game-changing situations: goals and offenses leading up to a goal, penalty decisions and offenses leading up to a penalty, direct red card incidents and cases of mistaken identity.

FIFA will follow the Bundesliga model of a central control center for the VAR rather than using trucks outside stadiums.

"We will have all of the referees based in Moscow so there won't be any stress in terms of travel," Collina said.

For each match, Collina will select one VAR and three assistant VARs.

Training operation rooms presented to media included six monitors for the VARs and two more for technical assistants enabling the VARs to see requested replays.

There could be up to four technical assistants in the room for World Cup matches. Offside Cameras

FIFA will install two extra cameras at matches to monitor offside decisions.

The cameras will be in addition to the 33 cameras used for broadcasters and they will be installed under stadium roofs.

Broadcasters will not have direct access to the cameras but if they are used by the VAR then broadcasters can show the video.

Runge added that three-dimensional technology -- considered the ultimate strategy for determining offside -- is not ready for real-time access yet.

VARs will only do one match per day

VARs will not officiate more than one match per day.

"It's not like watching a match on the sofa sipping coffee," Collina said.
http://www.espn.com/soccer/fifa-world-cup/story/3462164/video-assistant-referee-decisions-at-world-cup-will-have-written-explanations