And surely as a driver playing I Spy, singing, and chatting is also a distraction? Why not take
@confusedcyclist suggestion to it's natural extreme and ban all talking or discussion. We could implement something like aviation's
Sterile Cockpit Rule...
The comment about playing i-spy and having a discussion within the cabin is ludicrous, people talking to you in a car are aware of your dirivng situation and you can stop participation in any discussion in order to safely pass a cyclist in the road. Taking your eyes of the road, however, to look at your radio or changing the route on your sat nav while moving at speed is reckless and places others in danger, pure and simple.
By allowing the use of these devices while moving at speed, you inadvertently invite these morons to behave in these ways, if it can happen, it will. Tell me, do those driving whilst texting display such restraint and utilise this "common" sense you mention? News flash, the majority of the human race are too busy rushing about their daily lives to think about the consequences of their actions, particularly trivial actions such as glancing away from the road for a few seconds, or worse, longer. The common sense approach is to save lives, not endanger them with gadgetry.
When talking about saving lives, the inconvenience of limiting the changing of radio station or using your sat nav while moving pales in comparison.
Oh and don't get me started on entertaining children with iPads... for the love of god.