When the head of the National Transportation Safety Board called for states to pass tough new laws banning drivers from using cellphones or hand-held devices, she said: "No call, no text, no update, is worth a human life."
While Tuesday's statement by NTSB Chairwoman Deborah Hersman is undeniable, there are those who question the advisability of such a ban. Some state lawmakers and transportation experts say it could be difficult to enforce and that there's no real evidence yet that existing laws on hand-held devices have significantly reduced accident rates.