Has Legal Marijuana Made Colorado's Roads Less Safe?

DENVER (CBS4) - Two recent studies have looked at whether Colorado's roads are less safe due to the legalization of marijuana.

The first study released found a link between legalized recreational marijuana and an increase in car crashes.

On Thursday a different study was released.

It found there's been no increase in deadly car crashes since Colorado legalized recreational marijuana.

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Those findings were published in the American Journal of Public Health.

The first study was conducted by a non-profit research group that publishes insurance statistics.