The Safety Score is a comprehensive metric used to evaluate driver and vehicle performance, providing insights into driving behaviors and fleet safety. The score incorporates data from three key event categories - Harsh Driving, Distracted Driving, and Incidents, while accounting for distance traveled to ensure fairness and consistency across drivers, vehicles, and fleets.
How the Safety Score is Calculated
The Safety Score is measured on a 0–100 scale, with 100 representing flawless driving behavior. The formula ensures fairness by normalizing the impact of events relative to the distance traveled, using a standard reference distance of 100 miles.
1. Formula
2. Weights by Event Severity
- Harsh Driving (WeightH=0.5): Moderate impact on the score.
- Distracted Driving (WeightD=1): Higher impact due to increased risk.
- Incidents (WeightI=10): The most severe impact, reflecting critical safety risks
3. Distance Factor
The Distance Factor scales penalties based on the total miles driven. The standard reference distance is 100 miles, ensuring drivers covering greater distances are assessed fairly compared to those with limited driving data.
Examples of Safety Score Calculation
Driver A
- Events: 4 Harsh, 2 Distracted, 1 Incident
- Distance: 1,000 miles
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Result: High score due to significant mileage.
Driver B
- Events: 4 Harsh, 2 Distracted, 1 Incident
- Distance: 5 miles
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Result: Low score due to minimal mileage amplifying penalties.
Safety Score by Fleet, Driver, Vehicle, and Trip
The Safety Score can be calculated across multiple dimensions to provide a holistic view of performance:
1. Fleet, Driver, and Vehicle Scores
Scores for fleets, individual drivers, or vehicles follow the same formula, aggregating events and distances to produce an overall safety score
2. Trip Safety Score
For individual trips, the score is weighted by distance to ensure accuracy:
Example
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Trip 1: Score = 80, Distance = 10 miles
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Trip 2: Score = 90, Distance = 20 miles
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Trip 3: Score = 70, Distance = 30 miles
Score Risk Categories
The Safety Score is divided into four risk categories—High, Medium, Mild, and Low—to provide a clear understanding of driver and vehicle safety performance.
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High Risk (0–40):
Drivers or vehicles in this category exhibit significant safety concerns, such as frequent incidents, distracted driving, or harsh driving behaviors. Immediate intervention is required, including driver training, coaching, or reassignment to mitigate risks.
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Medium Risk (41–70):
This range reflects moderate safety risks, with occasional unsafe behaviors or events. While not critical, these scores highlight areas needing attention, allowing fleet managers to address specific patterns through targeted improvements and regular monitoring.
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Mild Risk (71–90):
Scores in this range represent relatively safe driving habits, with only minor incidents or unsafe behaviors recorded. Drivers or vehicles generally perform well, but occasional lapses may require attention to maintain safety standards.
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Low Risk (91–100):
This category signifies excellent safety performance. Drivers and vehicles in this range consistently adhere to safety practices, with minimal or no recorded events. Fleet managers should recognize and reward these high performers to encourage positive behaviors and motivate others.