The International Football Association Board (IFAB) was meeting in Zurich ahead of a decision expected to rubber-stamp a move already backed by FIFA's top brass, including president Gianni Infantino.
Assuming IFAB endorses VAR, FIFA may take the final formal step of integrating the technology into World Cup competition rules at a meeting in Colombia later this month.
VAR can only be used when there is doubt surrounding any of four key game-changing situations: goals, penalty decisions, straight red cards or mistaken identity.
Spain's La Liga on Friday began training officials ahead of the technology's expected introduction next season.
More From This Section
- Critics persist -
===================
But opinion is still divided, players and managers have complained of referees being too eager to defer to technology, while fans in stadiums have been left in the dark as to why decisions are being made.
UEFA president Aleksander Ceferin said this week that European football's governing body would not introduce VAR in next season's Champions League due to ongoing "confusion" surrounding its use.
That is an issue confronting major North American sports like baseball and American football, where different forms of video replay have been in use for several years leading to renewed calls to shorten the length of games.
Some sceptics also have reservations about implementing such a significant change at the World Cup, before all the kinks have been resolved at lower-profile competition.
-- Access to information --
===========================
But the desire to avoid disputed calls -- especially in a competition with such a large global audience -- tipped international football officials to support using VAR at this summer's tournament in Russia.
For Infantino, international football had to ensure World Cup officials have access to same images as fans.
"In 2018 we cannot anymore afford that everyone in the stadium and everyone in front of a TV screen can see within a few minutes on his phone whether the referee has made a big mistake or not, and the only one who cannot see it is the referee", he said last month.
"So if we can help the referee then we should do it," he added.
"This is the new life. This is modern life," said Iran head coach Carlos Queiroz.
"It is obvious that football cannot go on with its eyes closed to the modern world.