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.

While “magic mushrooms” may be decriminalized in Colorado, state transportation officials are reminding the public that it remains illegal — and dangerous — to drive while under the influence of ...

The PSA cautioned marijuana affects reaction time, judgment, and that impairment can show up in different ways behind the ...