Researchers studying six years of highway fatalities in one Ohio county found more than 40% of 246 autopsied drivers tested positive for cannabis. Their findings, presented to the American College of ...

As marijuana use in the United States is on the rise, a growing number of drivers are getting behind the wheel high, while regulations and law enforcement agencies scramble to keep up with the danger.

COLUMBUS, Ohio — The Ohio Traffic Safety Office is working to expand a program aimed at educating high school students about how marijuana affects developing brains and the risks of driving under the ...

ATLANTA — Across the United States, 24 states allow recreational use of marijuana and cannabis, while another 14 allow it for medical use only. AAA, the Auto Club Group, said that as the use of ...