(USA Today) Growing concern over the continued use of cellphones by drivers has some states reviewing laws against the practice and exploring stiffer fines and harsher penalties.

A 2010 study by the Highway Loss Data Institute, an affiliate of the Insurance Institute for Highway Safety, found that current texting bans are not reducing the risk or amount of crashes. But some question whether tougher punishment is the answer.

Justin McNaull, director of state relations for auto club AAA, says seat belt studies show that when states impose higher fines, more motorists obey the laws.

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