Driver Score Overview
Driver Score uses the sensor data from the connected vehicle to calculate a driver score for each trip. This sensor data includes odometer reading, acceleration and speed. The driving performance for every trip is mapped to a score on a scale of 0–100. The key metrics for a trip score calculation are Acceleration Behaviour, Braking Behaviour and Cornering Behaviour. Apart from the trip score, an aggregated overall score based on all the past trips is calculated to have a better representation of driving behaviour.
What is considered bad driving behaviour?
Any of the following driving events may be considered “bad driving behaviour”:
- Rapid/sudden acceleration
- Harsh braking
- Harsh cornering
How are harsh driving behaviour events determined?
A harsh driving behavior event is determined based on the amount of G-Force experienced by the driver during the event. Any event exceeding a certain G-Force threshold is called as a harsh event.
What is G-Force?
The force which a driver experiences in a car while accelerating, braking or taking turns is called the G-Force and includes:
- An acceleration event where, the driver would feel like he/she is pushed back into the seat
- A braking event where, the driver would feel like he/she is thrown forward towards the steering wheel
- A right/left turn event where, the driver feels like he/she is still moving in a straight line, yet pulled the opposite direction from the vehicle’s turn
What is a harsh acceleration event?
Increase in speed of approximately 12 km/h in one second is considered a harsh acceleration event. The Driver Score card will show the total number of harsh acceleration events over the past 30 days.
What is a harsh braking event?
Decrease in speed of approximately 12 km/h in one second is considered a harsh braking event. The Driver Score card will show the total number of harsh braking events over the past 30 days.
What is a harsh cornering event?
A harsh right/left turn event with a lateral acceleration of approximately 13.7 km/h per second (≈ 3.8 m/s²) is considered a harsh cornering event. The Driver Score card will show the total number of harsh cornering events over the past 30 days.
How is the trip score calculated?
The trip score is calculated using the total number of harsh events and total number of kilometres driven during the trip. New trips will appear the following day.
How is the overall Driver Score calculated?
The overall Driver Score is calculated by taking the weighted average of all trip scores and the number of kilometres driven during each trip. New trips are included in the overall score the following day.
How can a driver improve acceleration behaviour?
Always make sure to accelerate gradually and smoothly. Avoid speeding up and slowing down unnecessarily.
How can a driver improve braking behaviour?
Always leave enough space between you and the car in front to avoid having to slam hard on your brakes.
How can a driver improve cornering behaviour?
When taking a corner, slow down gradually on the approach, maintain a steady, safe speed (≤ 25 km/h) as you turn and then accelerate gently as you start to leave the corner.
How to support safer driving in your Fleet
1. Monitor driver behaviour using Driver reports
Use driver reports to provide an overview on how individual drivers are performing and adhering to your health and safety program. These reports can support identifying unsafe behaviour immediately and allow remedial training to be conducted.
2. Policy to provide clear, safe driving rules
Communicate and make available to all drivers a clear defined policy relating to expectations around safe driving behaviour. Ensure this information is readily available to drivers at any time and is clearly understood to allow them to have them front of mind at all times.
3. Education and training
Use driver reports to provide real-time feedback to drivers and identify training requirements to improve fleet safety.