Racing Flag Code 60
As an alternative to the full-course yellow and safety car periods used during other FIA-backed races, the 24H Series uses a series of purple lights and flags to declare a "Code 60" period. Under "Code 60," overtaking is not allowed and all drivers must slow their cars down to a maximum of 60 km/h (37 mph).
It's Business As Usual
Your information is safe with us
The race resumes immediately when green flags are waved and green lights are flashing at each marshal post. Yellow flags are still used to indicate local cautions. Wikipedia