Driving and marijuana:

“There’s no quick way to test for DUI with this stuff”

‍ ‍AAA: new studies explore reasons why more people are driving stoned behind the wheel.

AAA: new Foundation for Traffic Safety study (March 2025) proves that over half of marijuana users admit to driving high behind the wheel.

‍ ‍A.P.: NTSB chief says people underestimatemarijuana’s impact on drivers, after six person fatal crash.

‍ ‍Baltimore Sun (Oct. 2025): “marijuana use doubles on Maryland’s roads since legalization, study shows

‍ ‍CDC.gov: “Impaired Driving: Get the Facts.”

‍ ‍Clinical Chemistry Journal: study (2013) shows “substantial driving impairment” by drivers who use marijuana.

‍ ‍Colorado Division of Criminal Justice: report (2019) shows that vehicular fatalities involving DUI by marijuana delta-9 THC) increased 140% between 2013 and 2019.

‍ ‍The Conversation: drugged driving, including marijuana, is quickly becoming one of the most dangerous road hazards.

‍ ‍Fox News (video Oct. 6, 2025): nearly half of drivers in fatal car crashes were using marijuana

‍ ‍FTS (Foundation for Traffic Safety): new study (March 2025) shows that as many as 85% of marijuana users are driving same day of using.

‍ ‍ITSMR: the 2019 National Survey on Drug Use and Health study showed > 600K residents of NY reported driving under the influence of cannabis.

‍ ‍JAMA: emergency room visits due to cannabis related vehicle accidents increase by 475%.

‍ ‍The Mandarin (Australia): driving under the influence of marijuana: explanations and research data links.

‍ ‍NHTSA: understanding how marijuana affects driving.

‍ ‍NPR: THC breathalyzers? States are racing to find a good tool as driving while high is increasing.

‍ ‍NTSB.gov: driving and marijuana use.

‍ ‍NYT: as marijuana use grows, effect on road safety remains a blind spot.

‍ ‍Orlando Sentinel: will pot legalization (Amendment 3 in Nov. 2024) spark a stoned-driving epidemic in Florida?

‍ ‍Psychology of Addictive Behaviors (March 2026): new study shows that as many as 2 out of 3 young adults who used marijuana also drove while using it.

‍ ‍WSJ: “More people are driving on marijuana. Law enforcement is racing to learn how to detect DUI.”