After problems with kerb retaining bolts coming loose and causing cut left rear tyres in FP, the exit kerbs at Turns 6 and 12 will be removed, and replaced with painted versions.

During FP2 teams were told by the FIA to ask their drivers to avoid the kerb at Turn 6, which was believed to be responsible for the tyre issues seen in the first session.

The apex kerb is also being removed from Turn 13, although it is not actually used as the racing line.

As expected, the pit entry was a subject of much debate at the Friday drivers' briefing, and not just because of the potential of a major accident occurring at the tight chicane if someone gets it wrong.

Drivers confirmed that, because of undulations on the main straight, they found it hard to see the pit entry white line.

As such, the line is to be extended further back and moved to the left, while its beginning will also be marked with a new pit entry sign.

It is understood that, for safety reasons, drivers will not be allowed to cross the white line, in either direction, so they can't make a late change of mind about whether to pit or not.

In addition, they can't cross the white line while racing, so, in effect, the far left of that section of the straight will be reserved solely for cars entering the pits.

The FIA is also removing the apex kerb at the tight left-hander that forms the pit exit, and replacing it with paint.

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