Unlike with alcohol, there is no universal standard for THC levels while driving. But that doesn't mean it's safe.

As Thanksgiving approaches, law enforcement is intensifying efforts to curb impaired driving, with a particular focus on ...

A 17-year-old in Texas crossed the center line while driving his truck and killed six. He got 65 years in a case that ruined ...

After a massive Texas case saw a 17-year-old driving high get 65 years in prison, here's what to know about Florida's laws ...

Smoking marijuana while driving a vehicle in Oklahoma was already illegal, but a new law adds stricter regulations, making it ...

WASHINGTON (AP) – Six states that allow marijuana use legal tests to determine driving while impaired by the drug that have no scientific basis, according to a study by the nation’s largest automobile ...

A jury on Nov. 6 sentenced him to 65 years in prison in one of the harshest penalties ever for someone driving under the influence of marijuana, gaining national attention on intoxication manslaughter ...

Despite shifting laws around marijuana use, driving high remains illegal in every state and Washington, D.C. Recent research conducted by the Ad Council shows that many young male drivers don't fully ...

Oklahoma has expanded its impaired driving law to prohibit both drivers and passengers from consuming marijuana in a vehicle, including exposure to secondhand smoke.

A high-speed chase from Salinas ended early Tuesday morning after some alleged cannabis thieves made a wrong turn down a dead ...