Honda CBR1000RA 2018 Owner's Manual page 46

Instruments
Reserve Fuel Mode
When the low fuel indicator lights and the
low fuel pop-up information appears, the
available driving distance is indicated, and
the amount of remaining fuel display can be
selected.
You should refill the tank as soon as possible.
Remaining fuel amount turned to the reserve
fuel mode:
4.0 L (1.1 US gal, 0.9 Imp gal)
42
(Continued)
Low fuel pop-up information
Low fuel indicator
After refuelling more than the reserve
amount, the display returns to normal when
the ignition switch has been (On) position
for about a minute.
Available driving
distance