Researchers recommended “against reliance” on per se traffic safety law, which they said lacked any scientific basis.
Topic: Driving
Authors found “no evidence” that legalization was associated with short-term changes in traffic safety.
Compared to occasional users and non-users, daily consumers displayed insignificant changes in SDLP following cannabis inhalation and drove at slightly slower speeds.
Investigators concluded, “[W]e found no predominant pattern suggesting that behaviors and attitudes were more tolerant in states with liberal marijuana policies.”
By contrast, the use of the mobile device performance application, DRUID, was adequately sensitive to cannabis-induced changes in subjects’ performance.
Investigators concluded, “[T]here is no clear overall relationship with THC blood or serum levels and driving skills or crash risk.”
NORML has consistently opposed the imposition of THC per se limits.
The task force concluded, “A per se limit for drugs, other than ethanol, should not be enacted at this time as current scientific research does not support it.”