Practice question

THC is the main psychoactive ingredient in marijuana. In Washington State, a driver who is at least 21 years old can be arrested for driving with a THC level of _____ nanograms per milliliter of blood or higher

  1. 1.00
  2. 2.50
  3. 4.00
  4. 5.00

Answer: D — 5.00

In Washington State, a driver who is at least 21 years old can be arrested for driving with a THC level of 5.00 nanograms per milliliter of blood or higher. This legal limit is set to help law enforcement ensure the safety of all road users by identifying and penalizing individuals who are driving under the influence of marijuana. It is important for drivers to be aware of their THC levels before getting behind the wheel to avoid risking not only their own safety but also the safety of others on the road. Option A (1.00), Option B (2.50), and Option C (4.00) are incorrect because they are lower than the legal limit of 5.00 nanograms per milliliter of blood set in Washington State. Drivers with THC levels equal to or higher than 5.00 nanograms per milliliter can face legal consequences for driving under the influence of marijuana.

Practice more: Washington Written Drivers Permit Practice Test →