Chapter 5-3: Other ways to lose your licence

The “Other Ways to Lose Your Licence” section of the Ontario truck driver knowledge test highlights situations beyond accumulating demerit points that can result in the loss of driving privileges.

Ontario Truck Driver Test - Chapter 5-3: Other ways to lose your licence

1 / 25

Before deciding to drive after taking any drug or medication, what is the safest action to take?

Rely only on how you feel at the moment

Test yourself by driving around the block

Drink coffee to stay alert

Ask your doctor or pharmacist before you drive

2 / 25

What is the rule for commercial vehicle drivers regarding alcohol and drugs?

They may drink only off-duty days

They must have zero presence of alcohol and/or drugs in their system

They may use drugs if prescribed by a doctor

They may drink as long as they stay under the legal limit

3 / 25

If you use prescription medicines or get allergy shots, what should you do before driving?

Ask your doctor about side effects that could affect driving

Assume there are no side effects

Only ask friends about their experiences

Only read online reviews

4 / 25

What may happen to your driver’s licence after a medical report is made about a condition affecting driving?

It is permanently cancelled with no appeal

It is unaffected by medical reports

It is automatically renewed

It may be suspended until new medical evidence shows it is safe

5 / 25

Drivers of which licence classes are subject to the zero-tolerance rule for drugs and alcohol when driving the specified vehicles?

Classes G only

Motorcycle classes only

Classes A to F

No specific classes

6 / 25

If you cannot give a breath sample or it is impractical to obtain one, what can a police officer require instead?

A vision test only

A blood sample

A hair sample

A saliva sample only

7 / 25

What can happen if police determine you have drugs or alcohol in your system and/or that you are impaired?

You will be required to attend an information session only

You may face severe consequences including criminal charges and jail time

You will only receive a written warning

There will be no consequences if you admit use

8 / 25

What happens if you fail or refuse to comply with a police demand for breath samples or sobriety tests?

You will be charged under the Criminal Code

The police must let you go

You can reschedule the test for another day

You will only be fined with no charge

9 / 25

What may police do to determine if alcohol or drug testing is required?

Stop any driver and perform roadside spot checks

Only test drivers after a collision

Test only commercial drivers

Only test drivers who admit to drinking

10 / 25

What is the combined effect of drugs and alcohol on driving?

They have no effect if taken in small amounts

They always improve alertness

They can have dangerous effects, even several days after taking the drug

They cancel each other out

11 / 25

In cases of possible impairment by drugs or a combination of alcohol and drugs, police can require a driver to:

Provide breath samples, do field sobriety tests, and/or give bodily fluid samples

Only sign a declaration form

Only show their driver’s licence

Only answer verbal questions

12 / 25

If a commercial driver has alcohol or a drug in their system while driving a commercial vehicle, what may they face?

No consequences if no collision occurs

Serious penalties, including licence suspensions and monetary penalties

A mandatory training course but no fines

Only a verbal warning

13 / 25

To whom do doctors report medical conditions that may affect a person’s ability to drive?

The patient’s employer

The vehicle manufacturer

The Ministry of Transportation

The local police department

14 / 25

How are drivers impaired by alcohol or a drug treated under the law?

They are treated differently and not subject to sanctions

They face Criminal Code and Highway Traffic Act sanctions

They are only required to attend a lecture

They face only a small administrative fee

15 / 25

What should you do with over-the-counter medicines before driving?

Take extra doses to “get used to it”

Only check the expiry date

Ignore the package information

Read the information on the package about possible effects on driving

16 / 25

Which of the following can have dangerous effects on your driving?

Cannabis, illegal drugs, prescription drugs, and over-the-counter medications

Only herbal supplements

Only alcohol, not drugs

Only illegal drugs

17 / 25

In Canada, driving when your ability is impaired by alcohol or a drug is:

Legal if you drive slowly

Allowed if it’s a short distance

Only a traffic infraction

A crime

18 / 25

Which types of common medicines may affect your driving ability?

Only eye drops

Only vitamins and minerals

Only pain relievers

Stimulants, diet pills, tranquilizers, sedatives, allergy and cold remedies

19 / 25

If you are 21 years of age and under, what is your legal blood alcohol level when driving?

It must be zero

It may be up to 0.08

It may be up to 0.05

It does not matter

20 / 25

Who is legally required to report medical conditions that may affect a person’s ability to drive safely?

Doctors

Police officers

Pharmacists

Family members

21 / 25

When stopped by police, which of the following might you be required to do for alcohol testing?

Show your maintenance records

Complete a written exam

Blow into a roadside screening device or perform physical co-ordination tests

Run for a short distance

22 / 25

At what minimum age must doctors report patients with conditions that may affect safe driving?

18 years and older

16 years and older

14 years and older

21 years and older

23 / 25

Can you be charged with impaired driving even if your vehicle is not moving?

Only if the engine is revving loudly

No, the vehicle must be moving

Yes, if you are impaired while behind the wheel

Only if you are in a parking lot

24 / 25

Which of the following vehicles are covered by the commercial zero-tolerance rule?

Vehicles requiring a class A to F licence, CVOR vehicles, and road-building machines

Only personal passenger cars

Boats and aircraft

Bicycles and e-scooters

25 / 25

Which of the following is a reason your driver’s licence may be suspended?

Driving without your insurance card in the vehicle

Receiving a parking ticket

A medical condition that may affect your ability to drive safely

Forgetting to renew your licence plate sticker

Your score is

Truck drivers may lose their license for offenses such as driving under the influence of alcohol or drugs, failing to pay traffic fines, or being convicted of serious criminal offenses involving a vehicle. Repeated violations, providing false information, or refusing a breathalyzer test can also lead to suspension or revocation. This section underscores the importance of responsible driving and legal compliance in maintaining a commercial licence and protecting both public safety and professional reputation.

Test yourself with the Ontario truck licence practice test study questions until you can explain the concepts clearly without looking at the notes.