A survey of teens and parents earlier this year found a disturbing misinformation trend. Fully 33 percent of teens reported believing that, where marijuana is legal for recreational use, driving while high is also legal. Over 20 percent said that driving while high is common among their friends. Parents were only slightly less likely to be misinformed. Twenty-seven percent believed driving while high was legal in recreational use states, and 14 percent said it was common behavior among their friends.