Former Premier League referee Andy Davies breaks down how VAR functions ahead of its expanded role at the 2026 FIFA World Cup. The video assistant referee system exists to correct clear errors when officials miss crucial information during matches. Semi-automated offside technology (SAOT) uses up to 30 specialized cameras to instantly detect offside positions and generate 3D graphics for faster, more accurate decisions.

The VAR team monitors every moment of play, automatically checking incidents across six categories: goals, penalties, red cards, mistaken identity, corner kicks, and second yellow cards. When potential errors arise, referees can review pitchside monitors before making final calls. The system operates under a "clear and obvious" standard, meaning interventions only occur when replays show little doubt about on-field mistakes.

Davies emphasizes that subjective decisions remain with the on-field referee, who can even overrule VAR recommendations. This approach preserves referee authority while improving accuracy on game-changing calls. Reviews can take up to four minutes when analyzing complex incidents, but correct outcomes ultimately matter more than speed.

The technology has sparked debate among fans and pundits, with critics arguing it disrupts match flow while supporters praise improved decision accuracy. VAR's expanded scope at the 2026 World Cup reflects FIFA's commitment to getting more critical calls correct, even if it means longer delays.