Marijuana laws are changing, including here in Pennsylvania. The state passed legislation allowing medicinal marijuana, as have 28 other states. A few others have decriminalized the drug on a higher scale.
There are new legal challenges as marijuana becomes more socially acceptable, like how to address drivers suspected of being high. Unlike alcohol, there is no breath test to prove use at a traffic stop. Marijuana hinders judgment and reaction time, and police are actively looking for impaired drivers. When can officers stop a driver and how can they test for use?