Formula One's governing body made a tweak to the safety car rules on Tuesday to avoid a repeat of the controversy that erupted after last year's title-deciding race in Abu Dhabi.
Race director Michael Masi, who was replaced last month, changed the procedure in the closing laps at Yas Marina in a move that allowed Red Bull's Max Verstappen to pass Mercedes' Lewis Hamilton and take the title.
Hamilton would otherwise have taken a record eighth championship.
The governing FIA spelled out in a revised edition of the 2022 sporting regulations that 'all', rather than the more ambiguous 'any', lapped cars must unlap themselves before a re-start.