Each driver will be given a Safety Score that is a composite of harsh events and time driving over the speed limit. You can use a driver's Safety Score to encourage positive driving behaviors that may reduce the likelihood of accidents. You'll be able to see how individual drivers are performing and what safety trends need driver coaching. Learn more about Driver Coaching here.
To see a driver's Safety Score, go to Safety > Safety Report. You can select a Driver at the bottom of the page and their Safety Report will appear.
How the Safety Score is Calculated
The Safety Score on the Safety Report is calculated using a mix of Total Harsh Events, Total Miles Driven, Total Time-Driven and Time Over Speed Limit. Please note, manually adding labels to a harsh event will not impact the Safety Score at this time.
Starting with a potential safety score of 100, subtract 1 for every categorized Harsh Event (harsh brake, acceleration, or turning) per 1000 miles driven, then subtract the percentage of Time Over Speed Limit of the Total Time Driven.
You can find the driver's score in the example pictured above using the following equation:
Safety Score - Speeding FAQ's
Speeding accounts for almost a third of all traffic accidents and is a leading indicator of poor driving behavior. As such, it is one of the main contributors to the Samsara Safety Score. Here are a few common questions that address how Samsara factors speeding into the Safety Score.
Q: Is there a grace threshold of speeding over the speed limit? In other words, if I’m going 31 in a 30, does that count as speeding?
A: There is a buffer of up to 5 mph (or 8km/h) over any posted speed limit before Samsara considers a vehicle speeding. That means that drivers can drive up to 65 mph on a 60 mph road before being marked as speeding. Any time spent at or over that threshold (for example, 65 mph and over) will then be calculated into their safety score.
Q: Is there a grace period for the time spent over the speed limit? In other words, do you start counting speeding immediately after I cross a threshold?
A: Beyond the 5 mph buffer in calculating speeding, there is no grace period after crossing the speed limit before Samsara counts time spent over the speed limit.
Q: Can I be alerted when my drivers are speeding?
A: Yes. You can set alerts against posted speed limits or specified thresholds from the alerts page.
Driver A is driving 67 mph on a road with a speed limit of 65 mph for 5 minutes.
This will not calculate any time spent over the speed limit.
Driver B is driving 68 mph on a road with a speed limit of 65 mph. The driver then goes 70 mph for a minute and then goes back to 68 mph.
This will be calculated as 1 minute of time spent over the speed limit.