With the expectation of recreational marijuana becoming legal in the State of Vermont in the next year, law enforcement is now turning towards figuring out how to detect whether motorists are under the influence of marijuana while driving.
Some interesting legal developments have arisen recently with regards to DUI-Drug investigations and arrests. Further, a 2017 NHTSA report to Congress has shed some significant light on the challenges facing law enforcement in being able to establish that a motorist is in fact under the influence of marijuana while driving.
THC per-se intoxication levels have not been defined by the Vermont legislature at this time. In fact, as shown in the NHTSA report, THC levels in the blood alone are not a reliable indicator of impairment.