Impaired Driving 23 ï‚· The number of Washington State drivers found to be impaired by marijuana use increased 28% from 764 in 2008 to 975 in 2010. ï‚· Among impaired Washington State drivers, the percentage found to be under the influence of marijuana increased 13% from 17.2% in 2008 to 19.5% in 2010. 24 ï‚· Drivers who test positive for marijuana or self-report marijuana use are more than twice as likely as other drivers to be involved in motor vehicle crashes. 25
ï‚· The number of persons living in Northwest HIDTA counties who received treatment for marijuana addiction increased 74% from 1999 to 2010 (6,309 to 10,966). 18 ï‚· The number of persons living in Cowlitz, Kitsap and Spokane counties who received treatment for marijuana addiction increased over 100% from 1999 to 2010 (1,076 to 2,341). 19 ï‚· The number of persons living in Clark County who received treatment for marijuana addiction increased over 165% from 1999 to 2010 (264 to 699). 20 ï‚· The number of persons living in Benton County who received treatment for marijuana addiction increased over 200% from 1999 to 2010 (142 to 451). 21
http://adai.washington.edu/marijuana/factsheets/marijuana_WA_state.pdf