Practice question

Marijuana and other drugs can impair a motorcycle rider. In Colorado:

  1. Cannabis cannot result in a DUI because it is legal for adults
  2. Riding under the influence of marijuana can result in a DUI or DUI per se if THC blood level is 5 ng/mL or higher
  3. Prescription medications never affect a DUI investigation
  4. Only alcohol can trigger Colorado's implied consent law

Answer: B — Riding under the influence of marijuana can result in a DUI or DUI per se if THC blood level is 5 ng/mL or higher

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