FIA clamps down on track limits ahead of qualifying

The FIA have updated the track limits around the Circuit of the Americas ahead of qualifying for the United States Grand Prix.

Turn 9 and Turn 19 were previously singled out in the Race Directors' Event Notes with drivers, including Lewis Hamilton, seeing some of their lap times deleted during Friday's action.

Ahead of Saturday qualifying, the FIA have also added Turn 6 to their notes, with the track limits defined as "when no part of the car remains in contact with the red and white kerb."

Drivers will still be given three slip-ups during Sunday's race before being shown the black and white flag and the matter referred to the stewards.

A new yellow flag rule has also come into effect this weekend in a bid to ensure drivers obey double waved yellows.

The stewards will now delete a driver's lap time if it is set during such a yellow flag period, removing any grey area after Fernando Alonso avoided a grid penalty during qualifying for the Turkish Grand Prix.