As far as our Samsara , I had been doing well ( 100% everyday for my score ) I have to keep my phone mounted right in front of me with Waze GPS app on all the time to know the speed limits ( because it's not always posted )
I get on the on ramp to a highway and drive to a customer. No problems. Return to terminal and perfect score ruined. I go to my manager and ask that my Samsara records be pulled up so I can understand what I did wrong ( this how it's supposed to work , right? Encouraging drivers to be safer by dangling $500 in front of them , right ) Manager pulls my GPS records up on map and Samsara mistook me getting on the highway on ramp for nearby street. Severely speeding. Manager cannot fix it. Manager sends email to safety manager explaining what happened and you have to wait for him to edit your Samsara records.
I'm one driver watching Samsara like a hawk one day. XPO has thousands of drivers. How many times does it mess up an hour? A day? A week? A month? You get the point.