The Amount of THC in Your System Does Not Determine Impairment When Driving Says New Federal Government Report

“The problem is we’ve funded this research that pretty conclusively shows that the THC concentration in the blood is not particularly well-correlated with impairment for driving,” said Frances Scott, a DOJ physical scientist, on a recent podcast. “Maybe what we need to do is kind of get away from that idea that we can sort of have a number when it comes to marijuana and have that mean that you’re impaired.”