Start of race or clear track conditions. Green lights are also used.
End of race, practice or qualifying session.
Final lap of race
Stationary: Potentially hazardous situation on track, proceed with caution, passing allowed. Yellow lights are also used.
Waving: Serious hazardous situation on track, proceed with caution, passing not allowed. Flashing yellow lights could also be used.
Indicates to a rider that they are about to be overtaken or lapped. These riders must allow the overtaking rider(s) to safely pass at the earliest opportunity.
Rider has been assessed a ride-through penalty. Usually accompanied by a number board.
Rider needs to exit race track. Usually accompanied by a number board.
When displayed on track, indicates that all riders must slow and go to the pits. Also indicates pit-lane exit is closed when displayed at pit out. Red lights could also be used
Indicates debris, fluid or a potentially hazardous situation on track.
Safety vehicle on course.
When crossed, indicates 1/2 total race distance is complete