On the subject of phones and radios being distracting, my personal experience is contrary to that.
When I first started driving heavy wagons in the mid/late 1980's, CB radio was very popular, due in part to the film "Convoy". In truth, we all had them and it was a fun time to drive a wagon as we had lots of laughs over the airwaves, but not once do I recall my attention being compromised due to having a conversation with another driver.
For some reason CB fell out of favour and hardly anyone uses it these days, and most drivers cite mobile phones as causing its demise. Again, I spend time on hands-free phone calls most days and I honestly don't believe that it impacts my driving abilities. Being in heavy haulage I quite often have the company of an escort van if I'm carrying an abnormal load and I'm in constant communication with the driver via the CB or a two-way radio, none of which strangely are illegal, and again I don't wander all over the road or sit in the middle lane of an otherwise empty motorway or drive for miles with my indicators flashing...
I could, on the other hand, tell many tales of police cars being driven incredibly badly, to the point where I've gained their attention by copious use of my loud air horns followed by gesticulating at them to pull over. It's quite interesting to pull up behind a police car in a crowded motorway service area and proceed to tear a strip off the "driver", before getting his collar number and reporting him for driving without due care and attention. Sadly it's pointless attempting to complain about them because they close ranks and put up brick walls to keep you out, but it makes them realise that they can't simply wander along doing what they want to.