Sgt. James Roy has commented that the potency of cannabis doesn’t necessarily correlate to impairment but rather on the frequency that a user uses it and the knowledge they have, according to National Highway Traffic Safety Administration research. (Photo provided)

Sgt. James Roy has commented that the potency of cannabis
doesn’t necessarily correlate to impairment but rather on the
frequency that a user uses it and the knowledge they have,
according to National Highway Traffic Safety Administration
research. (Photo provided)