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32. General Car Requirements

No signal of any kind may pass between a moving car and anyone connected with the car's Competitor or driver, save for the following:

  • legible messages on a pit board;

  • body movement by the driver;

  • lap trigger signals from the pits to the car;

Lap marker transmitters shall be battery-powered and, once operating, must be free-standing (not attached to any other pit equipment by means of wires or optical fibres) and incapable of receiving external information. Such lap triggers shall use a transmitter operating with a carrier frequency above 10 GHz (radio or optical) and a beam half angle of no more than 36° when measured at the 3dB point, and shall not be used for the transmission of any data from pit to car other than the lap mark. Lap mark data must be transmitted repeatedly and must be demonstrably consistent;

  • verbal communication between a driver and his Team by radio;

  • electromagnetic radiation between 2 and 2.7 GHz is forbidden, save with the written consent of the Promoter

  • GT3 Telemetry: one way (car to pit) telemetry is allowed.

  • IMPORTANT: no item, installation or antenna is permitted which may interfere at any time with the Official data logger, timing, GPS, radio or TV systems.