Find out how current testing works and what makes it so difficult to test for marijuana.
Roadside marijuana test equipment.
The ontario provincial police has yet to decide whether its officers will use new roadside drug testing equipment approved by the federal government.
The ability to properly test marijuana impairment with roadside devices remains front and centre seven months after legalization with at least one possible legal fight brewing.
Detecting marijuana by way of a road side test seems an obvious enough measure as the legalization movement gathers momentum but an effective technology is yet to really be established.
Stanford engineers are developing a portable device that measures thc levels in saliva a step toward creating a roadside test for driving under the influence of marijuana.