The Science on the Side of the Road – How Standardized Field Sobriety Tests Work Picture the scene: a car pulled over on the shoulder of a highway late at night, red and blue lights strobing, a driver standing on...

Beyond the Breathalyzer – Understanding the Drug Recognition Evaluation A breathalyzer answers one question with precision: how much alcohol is in this person’s breath right now? It is a powerful tool — but only when alcohol is the substance in...

DUI vs. DUID – Same Charge, Very Different Science Most people understand that driving drunk is illegal. Fewer realize that in most U.S. jurisdictions, driving under the influence of a prescription painkiller, a legally purchased cannabis product, or even an...

Still High, Not Impaired — Why THC in Your Blood Isn’t Proof You Shouldn’t Have Been Driving Here is a fact that surprises most people: a person can test positive for THC in their blood hours after any impairing effect...