Practice Test GeeksG2 - Ontario G2 Driver's License Practice Test
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Alcohol and Drug Impairment Flashcards

7 cards from real G2 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Alcohol and Drug Impairment flashcards as text

  1. What is a Standardized Field Sobriety Test (SFST)?

    Answer: A series of physical coordination and eye-movement tests to detect impairment

    SFSTs are a battery of physical tests including walking a line and eye-movement checks that officers use to detect drug or alcohol impairment.

  2. What is a Drug Recognition Evaluator (DRE)?

    Answer: A specially trained police officer who assesses drug impairment

    DREs are police officers with specialized training to evaluate drug impairment through a structured 12-step evaluation process.

  3. Under Canada's federal law, what is the THC blood concentration limit for fully licensed drivers before a drug-impaired driving charge applies?

    Answer: 2 nanograms per milliliter (ng/mL)

    Federal law sets 2 ng/mL of THC in blood as the threshold for a less-serious drug-impaired driving charge; 5 ng/mL triggers a more serious per se offence.

  4. If police have reasonable grounds to suspect drug impairment, they may demand a G2 driver to:

    Answer: Provide a urine or blood sample at a police station

    Officers can legally demand blood or urine samples at a police station to confirm drug impairment when they have reasonable grounds.

  5. How does cannabis use affect a driver's ability to operate a vehicle safely?

    Answer: It impairs judgment, reaction time, and coordination

    Cannabis impairs multiple driving-critical functions including judgment, reaction time, and motor coordination, making it dangerous to drive.

  6. A G2 driver is prescribed medication that may cause drowsiness. What should they do before driving?

    Answer: Consult the medication label or a doctor before driving

    Drivers must check medication warnings and seek medical advice to determine whether it is safe to drive while taking the prescription.

  7. Why is it dangerous to combine alcohol with prescription or over-the-counter medications before driving?

    Answer: Drug interactions can multiply impairing effects beyond what either substance causes alone

    Mixing alcohol with certain medications can significantly amplify impairment, making driving far more dangerous than either substance would alone.

How this page was made: written with AI tools and published by Nathan Beja, founder of Practice Test Geeks, who is responsible for its content. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy

Sources & references

Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy

  1. ontario.ca — Eligibility, score validity, exam information · verified Oct 2026
  2. drivetest.ca — Test delivery, eligibility, renewal, retake policy, score release, time limit, score validity, exam format, passing score, fees · verified Oct 2026