WASHINGTON, Feb. 7 (UPI) -- A new study from the National Highway Traffic Safety Administration indicates marijuana use doesn't increase traffic accident risk as much as previously thought.
The study looked at 9,000 drivers over the course of 20 months. It found drivers who regularly use marijuana are 25 percent more likely to be involved in a traffic accident. However, when the researchers factored in age, gender and level of alcohol consumption among marijuana users, they found those factors were more significant than the use of marijuana. Marijuana use did not noticeably impact crash risk once the other factors were added.