Uber announced today that it is going to watch how smooth and safe its drivers are on the road, using GPS data and their smartphones. 
The company will use the gyrometers in drivers’ smartphones to look at how often a vehicle starts and stops, as well as how smooth the ride is. If a rider then complains about the quality of their ride Uber will be able to verify if the claims are accurate or not. 
“Over time, we hope to use the technology to improve safety proactively,” Joe Sullivan, Uber’s chief security officer, wrote in a blog post. “Speeding is the root cause of many accidents in the US, causing over 10,000 deaths [in 2012] alone.” 
In the UK, 3,064 people died in speed-related road accidents according to the most up-to-date data from 2013.