The online racing simulator
24 Hours of Aston Grand Prix: Drivers' Briefing
Clutch:
Use of button clutch will result in the loss of all laps by the offending driver, and may result in further penalties if it is found that the driver did not act alone (i.e., if the driver was encouraged to use it by his team).

Drivers will still be allowed to use manual clutch, but must select "Axis" in the Options->Controls menu.

As a shorthand way of looking at it: EITHER "Clutch" must be set to "Axis" in the Options->Controls menu, OR "Auto clutch" must be set to "On" in the Options->Driver menu. In the LFS Stats flags field, this will mean that by your name Flag will say either Clutch (for autoclutch) or AxisClutch (for manual pedal clutch). If the Flag field is empty, we will know that you are using button clutch.

45% rule:
GT1: 244 laps (2:39,5 avg)
GT2: 231 laps (2:48,5 avg)

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