The Smoothness sub-score is a combination of these three different factors:

– Braking: Braking events happen for lots of reasons depending on a number of things such as time of day, weather and lighting conditions. A sudden road obstruction or drivers not giving the road their full attention when approaching traffic or junctions can cause them to brake harder, leading to a braking event. Preparing for your journey and keeping a safe speed on the road at all times will reduce the chance of having a braking event.

– Cornering: Cornering events happen when a turn in the road is approached too quickly, making the driver more likely to lose control of the vehicle and get into an accident. The sharper the bend, the slower the driver should approach it, especially if the driver isn’t familiar with the road.

– Acceleration: Acceleration events can happen when the vehicle’s speed increases quicker than is safe given the type of road or safe speed.

Each of these elements are considered ‘events’ if they occur on a trip, these events can identify specific driving behaviours that need improvement.

Please note that having a driving event during a trip doesn’t mean you will have a bad score, but it will count negatively towards your score.