Formula 1 drivers have been warned that they face being reported to the stewards if they gain any sort of advantage from cutting chicanes over the Italian Grand Prix weekend.
The FIA has long faced a battle to enforce track limits at the first two chicanes, with it unable to use kerbs that are too high in case it causes trouble for drivers who have run wide because of a genuine problem.
While low plastic yellow and black kerbs have been laid down to discourage drivers from taking liberties, a further note has been sent to teams making it clear that the FIA will not tolerate any abuse of track limits.
The note said: "Any driver who uses a part of the areas behind the second apexes of the first and second chicanes, and which is suspected of gaining any sort of advantage from doing so, will be immediately reported to the Stewards."
The black and yellow kerbs have been installed at the second chicane to ensure that drivers who run wide have to take a longer route around them to rejoin the circuit.
A yellow line has also been painted, and a red and white polystyrene marker board put down, which drivers must stay to the right of before they return to the track.
Drivers running down the escape road at the first chicane have been told that they must weave their way between three rows of polystyrene blocks. They can only use the grass 'if it is clearly unavoidable.'