“More Drivers Killed Under the Influence of Drugs Than Alcohol”
Pot is detectable for a month after use, so that statement is, as you said, completely unsupported. Some percentage of those drivers, and probably a very high percentage, weren’t high at the time.
I have noticed one thing about these “studies:” none of them *ever* discuss this. They all seem to suggest that every time pot is “detected,” the driver was impaired.
This is similar to the conduct of the alcohol Nazis, who count as “alcohol related” any accident in which anyone in any of the involved vehicles had had any amount of alcohol.
If a passenger in a car rear-ended at a stop light had a beer three hours previously, that is an “alcohol-related accident.”
If a driver of a car involved in an accident smoked pot a month ago, then pot is to blame—with no mention of who was at fault in the accident.
Rule #1: prohibitionists lie. How can we believe them about anything, when they are habitual liars?
Is there a test that can set a quantitative figure of THC in the body? A test that can determine whether the amount is likely to cause impairment?
I'm not aware of one. Certainly not one that an officer can use roadside.