What procedure should be followed if multiple, compatible electronic logging devices (ELDs) are used to record a driver’s record of duty status (RODS) within a motor carrier’s operation?

If multiple, compatible ELDs are used to record a driver’s RODS within a motor carrier’s operation, the ELD in the vehicle the driver is operating must be able to produce a complete ELD report for that driver, on demand, for the current 24-hour period and the previous 7 consecutive days.