Rain Light Addition/Clarification
#35869 from Gregory Case · No action required · Minutes (2024-05 Fastrack)
Thank you for your letter. Rain lights in Technical List No. 19 meet the previous 2008 FIA specification, while rain lights in
Technical List No. 76 meet the current 2019 FIA specification. A significant difference exists between the two specifications. Rain
lights that meet the 2019 FIA specification are more than three times brighter than rain lights that meet the 2008 FIA
specification. When researching the subject, the FSRAC and the CRB reviewed video footage of formula and sports racing cars in
SCCA rain races, and the visibility of the cars ahead was clearly a function of the level of brightness from individual rain
lights. Please see the response to letter #34859 in the November 2023 Fastrack. The FSRAC and the CRB concluded that the
current 2019 FIA standard's three-times-brighter specification would have made a significant difference in the visibility of the
cars ahead in these rain races, providing a measurable improvement in the safety of the competitors. The CRB's decision to
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follow the current 2019 FIA specification for F/SR rain lights was based on choosing the standard that afforded the level of safety
believed to be appropriate for these cars.