The FIA won't accept any transgression of track limits in the first few corners at the Singapore Grand Prix.
Drivers could have been tempted to hug a faster extreme inside line at the apex of Turn 2 which turns right as they approach Turn 3.
But F1's governing body has installed a deterrent to the ploy, installing a cone after Turn 2 which drivers will have to go around should they exceed the track's limits
"Any driver who fails to negotiate Turn 2 by using the track, and who passes completely to the right of the orange kerb element, must keep to the right of the red and white polystyrene block and rejoin the track on the outside of Turn 3," wrote F1 race director Charlie Whiting.
The FIA also announced that several areas of the Marina Bay circuit have also been resurfaced, including the stretch between Turn 1 and 2.
The width of the pitlane has also been slighty increased by 275 mm.