122 million American adults live in states with access to either legalized recreational or medical marijuana. That’s equivalent to 50% of the entire U.S. adult population.

 [1] Please see downloadable PDF for source information.

Marijuana is 5x more potent than it was 30 years ago.

 [2] Please see downloadable PDF for source information.

75% of 11th and 12th graders polled in 2013 mistakenly believe they drive better under the influence of marijuana, or marijuana has no influence on their driving.

 [3] Please see downloadable PDF for source information.

There is a 200% increased risk of being involved in an automobile accident after using marijuana

 [4] Please see downloadable PDF for source information.

More college students drive stoned than drunk.

 [5] Please see downloadable PDF for source information.

Marijuana impairs critical driving functions.

 [6] Please see downloadable PDF for source information.

Smoking and drinking together has an additive effect

 [7] Please see downloadable PDF for source information.

Alcohol makes THC absorption and the high more intense

 [8] Please see downloadable PDF for source information.

A driver under the influence of both marijuana and alcohol may have more than 20x greater risk of a fatal crash than a sober person.

 [9] Please see downloadable PDF for source information.

Typical marijuana smokers experience a high that lasts approximately 2 hours.

 [10] Please see downloadable PDF for source information.

Frequent users in CO drove an average of 17 times per month within two hours of using marijuana.

 [11] Please see downloadable PDF for source information.

44% of WA drivers who had used marijuana in the past year, stated driving within 2 hours of using marijuana

 [12] Please see downloadable PDF for source information.

Nearly half of 11th-graders in Oregon currently using marijuana who drive a car, report that they drove within three hours of using marijuana in the past month.

 [13] Please see downloadable PDF for source information.

According to the Washington (State) Traffic Safety Administration, the presence of THC in drivers involved in fatal car crashes is at its highest number in any year during the 5-year period (2010-2014) studied. The numbers of drivers who had only alcohol in their systems was the lowest number during this same period.

 [14] Please see downloadable PDF for source information.

"Effects from smoking cannabis products are felt within minutes and reach their peak in 10-30 minutes. Typical marijuana smokers experience a high that lasts approximately 2 hours."

 [14] Please see downloadable PDF for source information.

“The greater the demands placed on the driver […] the more critical the likely impairment. Marijuana may particularly impair monotonous and prolonged driving. Decision times to evaluate situations and determine appropriate responses increase."

 [14] Please see downloadable PDF for source information.

About Hound Labs, Inc.

Hound Labs, Inc. is a scientific device company that developed the first technology to rapidly, accurately, and inexpensively detect and measure the levels of both marijuana and alcohol in a person’s breath. Dr. Mike Lynn, an ER physician, reserve deputy sheriff, and former venture capitalist and Mr. Kuni Oh, a patent attorney with deep technical background in engineering and science co-founded the Oakland-based company in 2014.

Learn about the Hound Foundation.