How do cops test for weed

Harvard Law School Educated. Many of legal restrictions regarding marijuana use and possession have been relaxed in California and as a result there has been an increase in the number of DUI cases involving marijuana use. Under California Vehicle Code Section f VC , driving under the influence of marijuana and other drugs, both legal and illegal, is a criminal offense. This means that the police and prosecutor must actually prove that the driver was under the influence of marijuana and not merely rely on the results of chemical testing.

Most DUI arrests begin when a driver is pulled over by the police after he or she is observed committed a traffic violation. The driving conduct itself can be used as evidence of impairment, such as where a driver is weaving extensively or running stop signs or red lights.

Whether the subject fails, and if so, how they fail, correlates to impairment by different drug classes. How did DREs arrive at these markers for cannabis? Back in the s, when illicit drug use, including marijuana, became popular in the U. From these correlations, a step-by-step evaluation process, which includes a urine or blood test, evolved.

DRE officers used these evaluations to form an opinion as to the source of impairment. This accuracy rate allowed officers to make these arrests—taking these dramatically impaired drivers off the road—and work within the court system to prosecute these offenses. If you put tomato sauce on it, do you have a pizza? But when you add in cheese and pepperoni, now you have a pizza.

Can passengers in a vehicle use cannabis? Transporting Cannabis. How do I transport cannabis properly? Does cannabis have to be in retail packaging? Can I transport cannabis on public transit? Useful Resources:. Access everything for the Edmonton Police Service in a single app, right on your mobile device!

Skip To Content. Drunk or high - the rules still apply Cannabis causes impairment, and driving while impaired is illegal. There are also rules around how cannabis can be transported in a vehicle. Here are some common questions police receive about cannabis and other drug-impaired driving. Cannabis and Driving Can you test motorists at the roadside for drug-impaired driving?

The Standardized Field Sobriety Test SFST is conducted by specially trained Police officers at the roadside when the driver of a motor vehicle is suspected to have a drug in their body.

This is because the test is designed to split your attention between the various tasks, which can be demonstrably more difficult while under the influence of marijuana. Guide to Quitting Weed. Facebook Private Support Group.

Weed Withdrawal Timeline. Weed Withdrawal Symptoms.