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How do cops test for weed when driving?

I’ll admit it. I love smoking weed. Since I live on the coast, I like to smoke a joint, go on a drive, and enjoy the scenery. However, one of my friends said I can get a DWI for driving while high. I’m skeptical. How can cops test for weed if they pull you over?

avatar
Eric Schad · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
With more and more states legalizing weed, law enforcement agencies have started to crack down on weed-related
DWIs
.
Cops test for weed when driving by:
  • Field sobriety tests: These are identical to the field sobriety tests for alcohol, but police officers look for impairment in different ways, most notably in the eyes.
  • Blood tests: If you refuse to submit to a field sobriety test, the cops will arrest you and get a warrant for a blood test.
  • Discretion: Some people slur their speech or suffer from confusion when under the influence of weed. So cops ask questions and gauge your answers.
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