Cartek FIA-Approved Rain Lights
Cartek LED rain lights have been developed specifically to meet or exceed stringent FIA requirements. They are made in the UK for racing use.
All of these rain lights use fifteen high-intensity red LEDs. The LEDs are isolated on individual circuits to ensure that the light will still meet FIA requirements, even with a failed LED. The LEDs are exposed (not hidden behind a lens), so all of the light gets out.