A flawed study by Harvard scientists claims that marijuana impairs driving even when users aren’t high.
Slower drivers pose a risk to roadway safety, according to a recent study out of the University of Toronto.
The degree of driving impairment resulting from recent cannabis use is difficult to distinguish from other conditions.
A recent analysis examined the incidences of fatal car crashes in the five years before and after cannabis legalization in Colorado and Washington.
Stoned drivers may drive slower and less aggressively, making up for some impairment in their reaction time.
There is no scientifically supported threshold of ∆9-THC bodily content that would be indicative of impaired driving.
Fear about cannabis and driving seem to be motivated by a political ideology rather than safety.