Amendment 3: Will pot legalization spark a stoned driving epidemic in Florida?

As Florida voters consider legalizing marijuana in November, opponents are painting a scary picture of what might happen: an epidemic of stoned driving that will make the state’s roads more dangerous and deadly.

But the research from other states that have legalized pot isn’t conclusive, and backers of Amendment 3 argue treating the drug like alcohol — making it legal but regulated — will make Floridians safer.

Two of Florida’s largest and most influential law enforcement groups are opposed to the measure, convinced it will lead to more deaths on the road.

If they need an example, they can highlight the horrific May...