April 2

Michigan Declines to Establish Threshold THC Level to Prove Impaired Driving


“On November 6, 2018, Michigan voters approved Proposal 1, creating the Michigan Regulation and Taxation of Marihuana Act (MRTMA). Among other things, this Act delegates responsibility for marijuana licensing, regulation and enforcement to the Michigan Department of Regulatory Affairs (LARA). LARA’s Bureau of Marijuana Regulation (BMR) is responsible for the oversight of medical and adult-use (recreational) marijuana in Michigan.”

Six states have set impaired driving thresholds of Delta 9 THC in blood, ranging from 1 to 5 ng/ml. Those states are Colorado, Montana, Nevada, Ohio, Pennsylvania, and Washington.

Michigan’s Impaired Driving Safety Commission, after study, declined to recommend that Michigan adopt any impairment threshold for Delta 9 THC because the commission determined that blood plasma concentrations of Delta 9 THC are not a reliable indicator of whether an individual is impaired.

“Therefore, because there is a poor correlation between Δ9-THC bodily content and driving impairment, the Commission recommends against the establishment of a threshold of Δ9-THC bodily content for determining driving impairment and instead recommends the use of a roadside sobriety test(s) to determine whether a driver is impaired.”

December 18

An Atlas of American Gun Violence

“This map was built with data collected by Gun Violence Archive, a nonprofit organization that gathers and verifies information about incidents of gun violence in the United States from media, law enforcement, and other sources. Its site launched in January 2014, and is now coming up on its fifth year in operation, allowing for a view of what a half-decade of gun violence in America looks like. The more than 150,000 incidents collected in this map cover the time period January 1, 2014 through December 13, 2018.”

“The map offers an incomplete picture of gun violence in the United States. Gun suicides, which make up the majority of firearm deaths, are not included because GVA only tracks them in aggregate. (Murder-suicides are included.) Incidents of gun violence for which GVA lacks precise location information have also been excluded.”

Link to Gun Violence Map:  https://www.thetrace.org/features/gun-violence-interactive-shootings-map/

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