Alcohol, Drugs, and Driving Flashcards
6 cards from real Washington State Knowledge Test practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Alcohol, Drugs, and Driving flashcards as text
What is the approximate time it takes for the liver to process one standard drink?
Answer: 1 hour
The liver metabolizes approximately one standard drink per hour; this rate cannot be increased by eating, coffee, or exercise.
In Washington, a commercial driver's BAC limit while operating a commercial vehicle is:
Answer: 0.04%
Commercial drivers in Washington are held to a stricter BAC limit of 0.04%, half the standard limit for non-commercial drivers.
Which factor most influences how alcohol affects an individual driver?
Answer: Body weight, gender, food consumed, and metabolism
Alcohol's effect on driving is influenced by body weight, gender, whether food was eaten, individual metabolism, and overall tolerance.
Under Washington law, open containers of alcohol in a vehicle must be:
Answer: Sealed and placed in the trunk or out of reach of passengers
Washington's open container law requires all open alcohol containers to be sealed and stored in the trunk or an area not accessible to the driver or passengers.
What is 'Drug Recognition Expert' (DRE) evaluation in Washington used for?
Answer: Identifying drug-impaired drivers at traffic stops
DRE officers are specially trained to identify signs of drug impairment in drivers who may not show alcohol intoxication on a breath test.
If a driver's license is revoked for a DUI in Washington, they must typically install what device to have driving privileges restored?
Answer: Ignition interlock device
Washington requires DUI offenders to install an ignition interlock device (IID), which prevents the vehicle from starting if alcohol is detected on the driver's breath.
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- dol.wa.gov — Fees, exam format, passing score, retake policy, score validity, test delivery, eligibility, renewal, exam information · verified Oct 2026