"Marijuana can impair cognitive abilities that are critical for safe driving," the study’s lead researcher Dr. Motao Zhu, an associate professor of epidemiology at Ohio State University College of Public Health said. "This is a serious issue that requires our attention."
In recent years, many states passed laws to legalize medicinal or personal use of marijuana. Zhu believes that may be a contributing factor to the number of teens driving high.
"Definitely, there's more availability of marijuana from legal channels," Zhu said. "Maybe teens feel marijuana isn't as harmful as they thought in the past." Read more.