Volvo VNL 780 Operator's Manual page 383

Rolling Buffer
The "rolling buffer" is set to measure distance driven. The buffer may be set at a short or
long distance. A short buffer results in a faster reward, (or loss of reward) which provides
driving fuel economy training to the driver, permitting the driver easy memory of the input
to the buffer during this short period of time. A long buffer setting allows for the daily
activities to "smooth out". In this case the reward is based on weekly/monthly activity.
The DID will indicate the
Performance Bonus status by
showing the actual status and target
within the parenthesis.
W3028720
OPERATION 373