FIA tweak rules at last minute

The changes to the 2012 Regulations have been approved by the Formula One Commission.

— One set of dry-weather tyres may now be carried over to Saturday if both Friday sessions are declared wet; it is hoped that this will result in teams carrying out more laps on Saturday.

— Changes have been made to the personnel curfew to ensure the rest periods remain constant throughout the season, irrespective of the timing of practice sessions at particular events.

— The race director may now prohibit the use of the adjustable rear wing (DRS) if he feels visibility is too poor in wet conditions. This has been done as a result of safety concerns over large speed differentials between cars.