RaceLaps int Live Only

RaceLaps is an integer value and returns the number of laps completed in the current session by entry that has completed the most laps (for your current lap see Lap).

Practice, Qualifying, Time Trial Sessions

The RaceLaps value is determined by the entry under DriverInfo->Drivers with highest number of completed laps. This may not necessarily be the entry with the sessions fastest lap.

Race Sessions

The RaceLaps value is still determined by the highest lap count