Find out how current testing works and what makes it so difficult to test for marijuana.
Roadside marijuana test equipment.
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.
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.
Why it s difficult to develop a roadside test for marijuana written by matt berger updated on september 24 2018 police in colorado and california are using tests to see if drivers are high.
Roadside test for marijuana.