Averages don't work for risk evaluation.
Eg, turn off the phone or turn off notifications, even vibrations. Or at least make a strict rule to ignore it while moving and only look while fully stopped, eg at a stoplight although that's just decent driver grade not excellent driver, because of the temptation the notification will present each time.
A great driver also reviews the route for a couple of minutes before leaving in order to reduce reliance on GPS-- you still use GPS but because it's not the first time you've seen the material, already know the shape of the route, and just need reminders to encourage you you're on the right track, the GPS will genuinely steal far less attention. The two minutes will be well spent, and may save lots of time, because it vastly reduces the likelihood of wrong turns.
