LyrArc Article Gist
States with zero tolerance laws for marijuana use are Arizona, Utah, South Dakota, Oklahoma, Iowa, Wisconsin, Michigan, Indiana, Pennsylvania and Georgia. Washington, Montana, Nevada,  Illinois and Ohio also restrict driving using marijuana.

About 15 million people reported using marijuana in 2019 in the US, according to AAA.  And 15% of the US population uses marijuana up from 7% 10 years earlier, according to Gallup.

Highway Safety officials at the state level say as lot of attention was paid into revenue coming to the state and not enough to highway safety for the legalization of marijuana use. 24 states legalized recreational use of marijuana, 39 states allowed medical use.

States that legalized recreational use in the western US - Arizona, Nevada, New Mexico, Montana, Washington, Oregon, California, Colorado, Alaska, Hawaii. In the Midwestern US- Illinois, Michigan. In the Southern US  Missouri and Florida, Maryland. In the northeast, Delaware, Connecticut, New York, Massachusetts, Maine, Vermont, New Jersey, Maryland Washington DC,