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 ...

New technology could help law enforcement fight back against drugged driving. This comes with changes in marijuana laws: medical marijuana is now legal in Ohio; other states have legalized ...

The Justice Department reclassified marijuana as a Schedule III drug, a shift that affects research and taxes but not legalization ...