Here’s the @fia’s full list of allowed and banned radio messages in #F1.

Message types allowed

  • Acknowledgement that a driver message has been heard
  • Lap or sector time detail
  • Lap time detail of a competitor
  • Gaps to a competitor during a practice session or race
  • “Push hard”, “push now”, “you will be racing xx” or similar
  • Helping with warning of traffic during a practice session or race
  • Giving the gaps between cars in qualifying so as to better position the car for a clear lap
  • Puncture warning
  • Tyre choice at the next pit stop
  • Number of laps a competitor has done on a set of tyres during a race
  • Tyre specification of a competitor
  • Indication of a potential problem with a competitor’s car during a race
  • Information concerning a competitors likely race strategy
  • Yellow flags, blue flags, Safety Car deployment or other cautions

Message types not allowed

  • Sector time detail of a competitor and where a competitor is faster or slower
  • Adjustment of power unit settings
  • Adjustment of power unit setting to de-rate the systems
  • Adjustment of gearbox settings
  • Learning of gears of the gearbox (Japanese Grand Prix and onwards)
  • Balancing the SOC [state-of-charge of batteries] or adjusting for performance
  • Information on fuel flow settings (except if requested to do so by race control)
  • Information on level of fuel saving needed
  • Information on tyre pressures or temperatures (Japanese Grand Prix and onwards)
  • Information on differential settings
  • Start maps related to clutch position, for race start and pit stops
  • Information on clutch maps or settings, e.g. bite point
  • Burn-outs prior to race starts
  • Information on brake balance or brake-by-wire settings
  • Warning on brake wear or temperatures (Japanese Grand Prix and onwards)
  • Selection of driver default settings (other than in the case of a clearly identified problem with the car)
  • Answering a direct question from a driver, e.g. “Am I using the right torque map”?
  • Any message that appears to be coded
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