THURSTON COUNTY, Wash. — Bringing three marijuana-users to a driving course, a Wash. television station found that the more high the drivers got, the less aptly they could navigate a driving course.
Marijuana, now legal in Wash. if a motorist has 5 nanograms or less in their system, was given to the drivers to see how their driving ability changed after they smoked.
The drivers all showed more aggressive driving, worse memory, and lack of confidence in skill.