You took a prescribed tranquillizer and then had one small drink. What does the manual warn?
Nunavut Class 7: Alcohol, drugs and driving
How alcohol affects driving, the 0.08 limit and impairment at any level, the blood-alcohol chart, prescription and over-the-counter drugs, illicit drugs and sobering-up myths.
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- Every answer explained
- Independent · not a government site
- 15 questions
- Topic drill
Study reference: Nunavut Driver's Manual (2022 posting), Ch. 9 Alcohol, Drugs and Driving, pp. 59–62
All 15 questions in this test
Every question and its answer choices. The correct answers and explanations appear when you take the test above.
You took a prescribed tranquillizer and then had one small drink. What does the manual warn?
- Only the drug affects you
- One drink with a drug is safe
- The combined effect is even stronger
- The drink cancels the drug
Which of these is a typical sign of a driver who has been drinking?
- Keeping a steady speed
- Stopping fully at stop signs
- Signalling every single lane change well in advance
- Failing to dim headlights for oncoming traffic
How is alcohol removed from your body?
- Mainly by the liver, which takes time
- By eating a large meal
- By exercising for a few minutes
- By drinking lots of water quickly
What is the blood-alcohol chart in the manual used for?
- Estimating BAC from body weight and drinks
- Listing which drinks are legal
- Setting fines for impaired drivers
- Showing how fast alcohol leaves
What did tests show about drivers who had used marijuana?
- No effect on driving skills
- Slower eye-hand coordination, yet more confidence
- Faster reactions and more caution behind the wheel
- Better focus on curves
According to studies in the manual, in what share of fatal accidents had at least one driver been drinking?
- About 5%
- About 90%
- About 50%
- About 20%
You are taking an allergy or cold medicine with an antihistamine. What does the manual advise?
- It is safe at any dose
- Don't use it when you will be driving
- Drive only short distances
- Take it with coffee to stay alert
What blood alcohol level does the manual give as the legal limit for driving?
- 0.05%
- 0.08%
- 0.10%
- 0.02%
How does the manual describe alcohol's effect on the body?
- It has no effect at low levels
- It is a depressant that slows reflexes
- It is a stimulant that sharpens you
- It improves night vision
A friend has had too much to drink and drinks black coffee before driving. What effect does the coffee have?
- It makes them safe to drive in an hour
- It cuts the alcohol level in half
- It may wake them up, but won't sober them
- It removes alcohol from the blood
Which abilities does alcohol affect first?
- Muscle strength
- Hearing and sense of smell
- Judgment and self-control
- Eyesight in daylight
A driver has just started taking high blood pressure pills. What side effect does the manual warn about?
- Faster reflexes
- Light-headedness
- Better concentration
- Sharper vision
Your blood alcohol is below 0.08%, but your driving is clearly affected. Can you be charged with impaired driving?
- Yes, at any level if your ability is impaired
- No, because you are under the legal 0.08% limit
- Only if you are a new driver
- Only if you cause a crash
A driver who uses insulin skips a meal. What could happen?
- The insulin stops working
- Low blood sugar could cause weakness or fainting
- Blood pressure rises sharply and causes a headache
- Nothing, if the dose was right
In one study, how did the crash rate of amphetamine users compare with non-users?
- It was ten times higher
- It was the same
- It was half as high
- It was twice as high
Alcohol, drugs and driving: key rules to remember
Our summary of what the official handbook says on this topic, in our own words. Read it before or after the practice questions above, then check the original chapter. Read the official chapter ↗
Alcohol
- Alcohol is by far the greatest hazard for drivers.
- It affects the highest brain functions first: removes inhibitions and impairs judgment; larger amounts affect more basic functions; finally unconsciousness and even death.
- A drinking driver may: drive too fast or too slow; fail to dim lights; pass improperly; change lanes often; drift in the lane; overshoot or ignore signals; lose alertness in emergencies; take longer to brake.
- Studies: in 50% of fatal accidents at least one driver had been drinking.
- Light-to-moderate drinkers feel no physical sign of impairment, may become impatient or angry.
How much can a driver safely drink?
- The goal is absolute sobriety at the wheel. You don't have to look or feel drunk for alcohol to slow your reflexes; drinking gives a false sense of confidence.
- Legal limit: blood alcohol concentration of 0.08%. You can still be charged with impaired driving at any level if your ability to drive is impaired in any way.
- Blood-alcohol chart (p. 60) estimates BAC from body weight and number of drinks.
Prescription drugs
- Tranquillizers, antidepressants, sleeping pills and other psychotropic drugs can impair driving; effect on any person is unpredictable.
- In a simulator test, diazepam or codeine worsened steering and braking and increased collisions.
- Combined with small amounts of alcohol, effects of both are stronger: a driver below 0.08% can still be badly impaired.
- Safe course: don't drive while on such a drug until you know you can drive safely on that dose; talk to your doctor. Never drive after drugs plus even small amounts of alcohol.
- Insulin: too high a dose or a missed or late meal can cause low blood sugar: weakness, light-headedness, poor judgment, fainting. Diabetic pills can do the same.
- Blood pressure pills often cause light-headedness, especially when treatment starts; don't drive until the doctor adjusts it.
Patent medicines
- Antihistamines (in allergy, hay fever, cold and cough medicines) often cause drowsiness; none should be used when driving.
Illicit drugs
- Appear to affect drivers much like alcohol.
- Amphetamines (speed): irritability, feelings of persecution, hallucinations; one study found users had twice the crash rate of non-users.
- Marijuana: definitely impairs driving; dulls thinking and slows eye-hand coordination; users felt more confident and less self-critical. LSD and similar drugs are even more dangerous.
Summary
- Alcohol is a depressant, not a stimulant: it reduces alertness and slows reflexes.
- Coffee, food or a cold shower may wake you up but won't sober you up. Only time works: the liver burns alcohol and it leaves through kidneys and lungs.
- Check with your doctor about medications; never mix medication and alcohol.
Other topics
- Regulatory signsSign shapes and the Nunavut colour code, stop and yield, speed signs, no U-turn, do not enter, one-way and two-way, keep right, passing signs, turn-control and overhead lane signs, and parking signs.
- Warning signsYellow warning signs for curves, merges, narrow roads, divided highways, intersections, signals, hills, slippery roads, railway crossings, deer, lane endings, fallen rock, soft shoulders, and hazard markers.
- School, construction and service signsThe pedestrian-school advance sign and its speed tab, school and pedestrian crosswalk signs, construction and maintenance signs, the slow moving vehicle sign, and service and information signs.
- Traffic lights and signalsLight colours and order, the fourth red light, red, amber and green lights, right turn on red, flashing red, amber and green, green arrows, lane use signals, pedestrian signals and police or flagman directions.
- Pavement markingsYellow and white lines, broken and solid lines, solid-and-broken pairs, double solid lines, stop lines and crosswalks, cross-hatching and directional arrows.
- Licence classes and the driver examinationNunavut's seven licence classes, what a Class 7 learner may drive, minimum ages, the two-part written test, vision and road tests, test refusals and licence conditions.
- Your licence, registration and insuranceLicence renewal and expiry, new residents, lost licences, name and address changes, licence offences, vehicle registration, the $200,000 insurance minimum, plate-to-owner plates and transfers.
- Your vehicle, equipment and seat beltsPre-drive checks, seating and steering position, warning lights, attitude and distraction, required equipment and light distances, mirrors, equipment inspection, seat belts and winter preparation.
- Right-of-way, emergency vehicles and railway crossingsUncontrolled intersections, entering from driveways and lanes, left turns, emergency vehicles and the 150 m fire engine rule, funeral processions, traffic circles and railway crossing stopping distances.
- Pedestrians, school buses and cyclistsCrosswalks, school and playground zones, pedestrian and driver responsibilities, blind pedestrians, stopping for school buses, and sharing the road with cyclists.
- Signalling, turning and turnaboutsWhen and how far ahead to signal, hand signals, right and left turns, turns between one-way and two-way streets, U-turns, two-point and three-point turns, prohibited turnabouts and approaching intersections.
- Highways, following distance and passingFreeway and controlled access highway driving, the two-second rule and following distances, avoiding rear-end collisions, passing in towns and on highways, meeting other vehicles and changing lanes.
- Stopping distances, parking and speed limitsReaction and braking distance, where you may not stop or park, parallel, angle and hill parking, opening doors, Nunavut's 90, 80 and 50 km/h limits, safe speed and the slow driver.
- Gravel roads, dust and winter drivingDust clouds and the 60 km/h meeting rule, flying stones, loose gravel and washboard, winter equipment, carbon monoxide, blizzards, icy roads, black ice and starting on ice.
- Fog, night driving, fatigue, curves and hillsFog, headlight reach and dimming distances, glare, night speed, drowsiness, curves and hills, coasting, hydroplaning, the first rain, and snowplows with flashing blue lights.
- Driving emergencies and accidentsRunning off the pavement, blowouts, skids, wet brakes, disabled vehicles, head-on threats, fires, sinking vehicles, stuck accelerators, and your legal duties after an accident including the $1,000 reporting rule.
- Motorcycles, trailers and larger vehiclesMotorcycle equipment and learner rules, sharing the road with motorcycles, towing a trailer, and rules for commercial vehicles such as clearance lights, load flags and trailer brakes.