Saskatchewan Class 7 Practice Test
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Passing target: 20 correct signs and 20 correct rules
A person has taken alcohol and a medicine that can cause drowsiness. Why would an alcohol-only reading not describe the person's total driving impairment?
Correct answer: It shows only alcohol, not the multiplied effect of the other drug.
Why
An alcohol reading reflects alcohol, not the total driving effects of every substance in the body. Other drugs can impair attention, coordination or judgment, and combining them with alcohol can increase those effects in an unpredictable way. Do not interpret an alcohol-only reading as proof that a drug-and-alcohol combination is safe for driving. Check medicine warnings, obtain professional advice and arrange sober transportation.
Verified against Saskatchewan Driver's Handbook: A Guide to Safe Driving · Drinking, drugs and driving · p. 184, 185
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