I don't think there should be any laws, personally. Rather, we should let Natural Selection do the work for us. If you're too stupid to put your phone away while you're driving, you don't get to live long enough to reproduce. Simple!
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I'm so glad that you inserted this chart. It reminded me to mention that since 1966 the number of fatalities and injuries had been on a constant decline, that trend changed at around 2009 - 2010, a coincidence? Or maybe not?