Cannabis breath test aims to measure intoxication

As cannabis becomes decriminalized or legalized for recreational or medical use in Missouri and many other states, questions have been raised about driving under the influence of marijuana. Drunk driving charges in Missouri are based on blood alcohol concentration, or...

Why officers stop some for impaired driving – MDCLC

Police officers look for specific signs that a driver is under the influence of alcohol, but not all of these occur after the vehicle has been stopped. Sometimes, officers spot things that indicate that a driver might not be able to drive safely, so they will initiate...