It will not take into account that bad drivers with cellphones are still bad
drivers without.
If defensive drivers use a cell phone they probably do not jump into your
lane cutting you off because they did not bother to look behind first.
I think it is the equivalent also to riding a bike no hands. Keep it
going straight takes alot of concentration and different muscle skills than
driving with one hand or two. Remember it takes two to drive at least and
only one when on a bike. Just take your other hand off the handlebars and
there you have what they do with a one ton slug aimed at your <.1 ton body
Maybe when everyone changes to secure!! bluetooth tech we will get a break.