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Ontario · G1 Knowledge Test · G1 · DriveTest (MTO)

Ontario G1 Knowledge Test — G1 Practice Question

Knowledge test administered by DriveTest (MTO) for the G1 licence. 40 questions, 80% to pass.

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Rules of the Road

Which of the following can also impair driving under Ontario law?

Show Answer & Explanation
Correct Answer: A. Prescription medications and some over-the-counter drugs

Legal medications — allergy pills, cold medicines, sleep aids, certain prescriptions — can impair driving. Always check the label for 'May cause drowsiness' and ask your pharmacist. Driving while impaired by legal drugs is still a Highway Traffic Act offence.