5.4 Rain Race Mandatory Equipment
To be approved to run in a rain race, drivers must have two functioning taillights. One of those lights must be FIA approved. The other may be an OEM equivalent.
FIA lights and taillights must function as follows:
FIA lights must be steady ‘on’ during entire time on track.
FIA lights will not be flashing.
FIA lights must be on the exterior of the vehicle with nothing obstructing the led’s (may not be behind glass, lenses, plastic lenses, etc.)
Taillights must be steady ‘on’ during entire time on track.
Taillights must illuminate brighter than steady on when driver is using brakes.
Below are some examples of FIA rain lights:
Any infraction not acceptable to these standards will result in a black flag during the race or disqualification.