Drug Recognition Expert Explains Cannabis-Related DUI Testing
A driver who allegedly crashed into a school bus on I-10 is undergoing cannabis-related DUI testing, according to court records. Maricopa County Deputy Luke Hardisty, a drug recognition expert, explained how the testing works.
Hardisty noted that since cannabis legalization, there has been an increase in cannabis-related DUIs. He emphasized that people often underestimate the effects of cannabis and drive impaired, putting themselves and others at risk.
When stopping a suspected impaired driver, Hardisty looks for signs of impairment, such as speed and lack of vehicle control. He also pays attention to the driver’s physical features, including their eyes, which he referred to as the “window to the soul.”
If a driver is suspected of being under the influence, they are asked to perform a field sobriety test. If they fail, it can lead to probable cause for further testing, which may include saliva, urine, or blood analysis.
Hardisty explained that the tests are designed to detect the active ingredient in THC, rather than its metabolized form. This allows law enforcement to determine if the driver was impaired at the time of the incident.
Recently, a driver who crashed into a school bus on I-10 was taken into custody on suspicion of DUI after showing signs of impairment during a field sobriety test. The driver’s saliva sample tested positive for cannabis, and a blood sample was obtained under a warrant.
Hardisty emphasized the importance of designating sober drivers or staying home after consuming altering substances. He encouraged people to prioritize their safety and the safety of others.
“If any amount of active THC is in a driver’s system, under Arizona statute, that’s going to be considered a DUI,” Hardisty said.
