USA Today, Easing of marijuana laws worries road safety advocates

1411527055000-AP-Rethinking-Pot-Driving-StonedAs the nation eases marijuana laws, road safety advocates worry that highway rules for driving under the influence of pot are lagging, which could lead to fatal crashes. Medical marijuana is legal in 23 states and Washington, D.C.; adult recreational use is legal in Washington state and Colorado; marijuana has been decriminalized in 16 states and Washington, D.C..

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