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“It’s clear that with the ramp up enforcement, Adelanto just does not have the staff to keep pace with the aggressive enforcement that’s happening now,” Norris said.

The key this year so far is that Piastri is delivering his best on a more consistent basis than Norris.

Norris, with use of the DRS overtaking aid giving him a straight-line speed advantage, clipped the back of Piastri's car as he tried to grab the inside line into Turn One.

Norris hit the back of Piastri's car on the pit straight with four laps to go as George Russell took Mercedes' first victory of the season with a controlled drive.

Norris said it was "tough to say" whether this had improved the feeling coming from the car.