25
/
49
Excess RPM duration ratio
(%)
This is another grading criterion for excessive RPM use as a longer time at
RPMs over the RPM limit increases the gas consumption, and hence cost.
This value is estimated as a percentage ratio of time exceeding the RPM limit
to total time driving, e.g. if a driver drove 8 hours one day but exceeded the
RPM limit for 1 hour in total, his/her score on this criterion would be 12.5%
and based on the above setting, they would be graded as A.
This criterion is used for only eco grading.
The assessment of this criterion is based on the {RPM Limit} component in
the analysis criteria settings.
Idling Count
(per hour)
This sets the grading criteria for idling and is calculated as per hour count.
Since it is an average for the whole duration of the drive, it can be set as a
decimal number, e.g. if a driver drove 8 hours and had 4 counts of idling
during that time, his/her score on this criterion would be 0.5 and based on
the above setting, they would be graded as B.
This criterion is used only for eco grading.
The assessment of this criterion is based on the {Idling Time Limit} in the
analysis criteria settings.
Once the Grading Criteria Setting is decided and recorded, it can be exported into an ini file and then
imported into other Analysis software to ease in setting multiple Analysis software.
**
Grading
Method
* Grades: Each criterion is given a grade of {A, B, C, D} and anything lower is given a grade of F for fail. The
set value for each grade is the lower limit and all scores that are lower in value, including the set limit, will
be given that particular grade. Any score exceeding this value will be given a lower grade and all scores that
exceed the limit for grade D will be given an F.
* Weights: Each criterion can be given a different weight when calculating the safety and eco grades to
provide the flexibility to the operator in assessment, provided that the sum of all weights equal 100.
* Grading and scores
Each grade is assigned a score: A=100, B=80, C=70, D=60, F=50 and with this score the safety and eco
scores are assessed by a weighted average of all the relevant criteria scores. The total score is an average
of the two safety and eco scores. The scores are then graded again based on the scale below.
90 ~ 100
A
80 ~ 89
B
70 ~ 79
C
60 ~ 69
D
0 ~ 59
F
For example, lets say two drivers received the below scores in each criteria. With these set weights, their
grades would come out as shown below.
Eco
grade
Weight Driver
1
Driver
2
Sudden Ctart Count
20
A(100)
C(70)
Sudden
Acceleration
Count
10
A(100)
A(100)
Sudden Brake Count
20
C(70)
A(100)
Speeding Count
20
A(100)
C(70)
Speeding
Duration
Ratio
10
C(70)
A(100)
Peak Speed
10
A(100)
A(100)
Average Speed
10
A(100)
A(100)
Eco
score
91
88
Eco
grade
A
B
