You can monitor the overall driver efficiency of your fleet or individual vehicles when you configure your Driver Efficiency score within the Fuel & Energy settings (Settings > Fleet > Fuel & Energy). Use the default settings or assign weights to driver behavior to influence the Driver Efficiency score. After you configure your settings, monitor driver efficiency using the Driver Efficiency Report.
The Driver Efficiency Report primarily supports fleets with heavy duty vehicles and larger commercial vans. For light duty and passenger vehicles, Samsara supports only Over Speed and Idling metrics.
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When you configure driver efficiency score weights, you select an integer from 1 to 10 for the relative parameter contribution to reflect in the total efficiency score. For example, if you select a weight of 1 for Green Band and 10 for Coasting, the Coasting parameter contribution to the overall score will be 10 times higher than that of the Green Band parameter.
To set score weights, click Configure and adjust the slide to the desired scoring weight for each metric. You can also set a metric weight to OFF to remove it from calculation in the overall score.
You can set score weights (1: least important; 10: most important; or OFF) for the following metrics:
|
Metric |
Description |
|---|---|
|
Cruise Control |
Time a driver uses cruise control in proportion to driving time. |
|
Coasting (any gear) |
Time spent without engaging the accelerator or brake in proportion to driving time. |
|
High Torque |
Time the vehicle engine torque is greater than 90% in proportion to driving time. |
|
Green Band |
Time in efficient RPM (800-1700) in proportion to driving time. |
|
Anticipation |
Quick braking events (less than one second after accelerating) in proportion to total braking events. |
|
Idling |
Time when the vehicle's engine is idle and PTO is not engaged in proportion to the engine on time (driving time plus idle time). |
|
Over Speed |
Driving time spent over the Efficient Speed threshold. This threshold is not the same as the speed limit, but rather the maximum speed you would like drivers in your fleet to travel for efficiency reasons. As a best practice, you can adjust the value to reflect a target maximum for your drivers that are specific to the vehicles they drive. The default threshold varies depending on region (80 kmh or 50 mph). |
Default parameters vary according to region:
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Europe: All parameters have equal weights of 5 (or ~14%)
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North and South America:
Over SpeedandIdlinghave a weight of 5 (or 50% each). Other metrics are off and thus excluded from the efficiency score.
Samsara recommends that you adjust the metric scores using Score Mapping, a setting that enables you to define how percentages are displayed for each metric, to better reflect the driving style of your fleet. The default values are calculated for 0 to reflect the bottom 10% of drivers and 100 to reflect the top 10% of drivers, with the exception of Idling. The following table provides the default values for each efficiency metric:
|
Metric |
Low Score (0) |
High Score (100) |
|---|---|---|
|
Cruise Control |
1% |
61% |
|
Coasting (any gear) |
2% |
10% |
|
Green Band |
48% |
84% |
|
High Torque |
8% |
1% |
|
Anticipation |
26% |
7% |
|
Idling |
100% |
0% |
|
Over Speed |
70% |
5% |
To accurately reflect driver efficiency, the driver efficiency score uses a proportional metric to determine the degree of efficiency. A score of 0 corresponds to really poor performance and a score of 100 indicates really good performance. With score mapping, you can fine tune the driver efficiency score settings to align with your business goals.
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For each score above or below a threshold, the nearest threshold is used for the driver efficiency score. For example, if the high score (100) threshold is 7% and the actual metric achieved is 10%, the driver receives a score of 100.
Each efficiency metric is proportional to the efficiency score using the following correlations:
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Directly proportional metrics (
Cruise Control,Coasting (any gear)andGreen Band) indicate that the more time spent in this metric as a proportion of drive time, the better the behavior and the larger the score. -
Inversely proportional metrics (
High Torque,Anticipation,Idling,Over Speed) indicate that the more time spent in them, the worse the behavior and the smaller the score. See Example: Anticipation Scoring, for use case of inversely proportional metrics.
For this example, use the following information along with the table below to visualize how the score setting influences the actual score for the behavior.
Using the default Cruise Control setting of 0 corresponding to 1% and 100 corresponding to 61%:
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Example A: 55% of time in cruise control (close to the threshold of 61%) maps to a score of 90 (close to 100).
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Example B: 5% of the time in cruise control (close to the threshold of 1%) maps to a score of 7 (close to 0).
|
|
Low Score Setting |
High Score Setting |
Example A |
Example B |
|---|---|---|---|---|
|
% of time in metric |
1% |
61% |
55% |
5% |
|
Score |
0 |
100 |
90 |
7 |
For this example, use the following information along with the table below to visualize how the score setting influences the actual score for the behavior.
Using the default Anticipation setting of 0 corresponding to 26% and 100 corresponding to 7%:
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Example A: 24% (close to the threshold of 26%) of Anticipation maps to a score of 11 (close to 0).
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Example B: 10% of the time in Anticipation (close to the threshold of 7%) maps to a score of 84 (close to 100).
Samsara uses data from scored metrics to calculate an overall efficiency score. You can use the overall efficiency score to monitor driver behavior and improve the efficiency of your fleet or individual vehicles. For instance, when you identify high fuel consuming activity such as high torque, you can coach drivers on reducing aggressive acceleration to reduce fuel costs and streamline sustainable business practices. You can view the overall efficiency score in the Driver Efficiency Report.
Only metrics that are weighted more than 0 are included in the overall score, while metrics that are weighted 0 are excluded from the report columns and efficiency score calculation. Driving Time and Engine On Time are not included in the calculation of the overall score.
You can calculate the overall efficiency score of each driver or vehicle using the following equation:
(Cruise Control Score x Cruise Control Weight %) + (Coasting Score x Coasting Weight %) + (High Torque Score x High Torque Weight %) + (Idling Score x Idling Weight %) + (Anticipation Score x Anticipation Weight %) + (Green Band Score x Green Band Weight %) + (Over Speed Score x Over Speed Weight %)
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