The story of the GreenRoad safety score

So – what exactly is the safety score and why is it so important? In short, the safety score is the way we tell a driver, depot or company how safely they are driving. It also enables a manager to compare drivers, vehicles or depots against each other and create some friendly competition. Depending on your safety score, you will be graded as either a green, amber or red driver, with green being low risk and red; high risk.

The safety score is shown as the number of events per 10 hours of driving – so, if you have a score of 20 or less in a ten hour period you will be a green driver, a score of 21 to 50 unsafe maneuvers per ten hours means you will be rated as amber and anything over 51 means you will be classed as a red driver.

Why do we use the number of events per 10 hours? Easy really, it’s because it doesn’t matter if you have done 15 hours of driving in one week of 60 we have a level playing field with which we can compare you. A score over a period of time is a good indicator of regular driving performance as opposed to a score per hour which could easily vary if the driver collects a number of events in a short period of time – which could be an anomaly and not their usual performance.

To get your current score, we don’t just look at the last 10 hours, we look at your last seven days of driving.  As the score is updated once a day, this is a rolling seven day period, so, to calculate your score, we simply take all the risky maneuvers you have done during that time, divide it by the number of hours you have driven and then multiply it by ten to give us a score per 10 hours of driving.

The whole idea is to enable drivers to quickly and simply see how they are performing and be able to easily compare their score against that of their peers.