As Motorsport.com revealed, the F1 Commission unanimously approved changes to the sport's Sporting Regulations that will result in a tweak to the qualifying format from the season opening race in Australia.

It came despite concerns that Ferrari could opt to block the change, amid its scepticism about the benefits of moving away from the previous qualifying format that had proved popular.

With the changes approved, the new rules have now been declared official in changes to Article 33 of F1's Sporting Regulations.

The new rules are:

a) From 14.00 to 14.16 (Q1) all cars will be permitted on the track. Seven minutes after the start of the session the driver last in the classification will be eliminated and will no longer be timed, he must then return to the pit lane and may take no further part in the qualifying practice session.

The same procedure will then apply after 8m30s, 10m0s, 11m30s, 13m0s and 14m30s leaving sixteen cars eligible to continue.

At the end of the session all drivers on the track may complete the lap they are on and, once these final laps have been completed, the driver last in the classification may take no further part in the qualifying practice session. Lap times achieved by the fifteen remaining cars will then be deleted.

b) From 14.24 to 14.39 (Q2) the fifteen remaining cars will be permitted on the track.

Six minutes after the start of the session the driver last in the classification will be eliminated and will no longer be timed, he must then return to the pit lane and may take no further part in the qualifying practice session.

The same procedure will then apply after 7m30s, 9m0s, 10m30s, 12m0s and 13m30s leaving nine cars eligible to continue.

At the end of the session all drivers on the track may complete the lap they are on and, once these final laps have been completed, the driver last in the classification may take no further part in the qualifying practice session. Lap times achieved by the eight remaining cars will then be deleted.

c) From 14.46 to 15.00 (Q3) the eight remaining cars will be permitted on the track. Five minutes after the start of the session the driver last in the classification will be eliminated and will no longer be timed, he must then return to the pit lane and may take no further part in the qualifying practice session.

The same procedure will then apply after 6m30s, 8m0s, 9m30s, 11m0s and 12m30s leaving two cars eligible to continue. At the end of the session any driver on the track may complete the lap he is on and, once any final lap has been completed, the overall classification will be established.

The above procedure is based upon 22 cars being officially eligible to take part in the Event. If 24 cars are eligible eight will be excluded after Q1 and Q2, if 26 cars are eligible nine cars will be excluded after Q1 and Q2, and so on if fewer cars are eligible.

If necessary, the intervals between the sessions and eliminations will be adjusted to ensure Q3 remains unchanged.