A brand new Congressional Analysis Service report on marijuana and motoring discovered that the presence of THC in an individual’s blood is an inconsistent predictor of each driver impairment and efficiency.

The report talked about: “Analysis research have been unable to persistently correlate ranges of marijuana consumption, or THC in an individual’s physique, and ranges of impairment,” NORML acknowledged. “Thus, some researchers, and the Nationwide Freeway Visitors Security Administration, have noticed that utilizing a measure of THC as proof of a driver’s impairment shouldn’t be supported by scientific proof to this point.”

The report’s findings are in line with a research by the Nationwide Freeway Visitors Security Administration.

“There may be as but no scientifically demonstrated correlation between ranges of THC and levels of impairment of driver efficiency, and epidemiological research disagree as as to if marijuana use by a driver leads to elevated crash danger,” the report concluded. “Based mostly on present data and enforcement capabilities, it’s not doable to articulate a equally easy stage or price of marijuana consumption and a corresponding impact on driving means.”

Illinois, Montana, Nevada, Ohio, Pennsylvania, and Washington implement numerous legal guidelines for the presence of sure quantities of THC in blood. Arizona, Delaware, Georgia, Illinois, Indiana, Iowa, Michigan, Oklahoma, Rhode Island, South Dakota, Utah, and Wisconsin implement zero-tolerant legal guidelines.