What blood alcohol level is allowed when driving a vehicle that needs a Class A licence?
Ontario Class A (AZ) Practice Test 2
40 questions on keeping your class a licence, night, weather and emergencies, cargo securement and oversize loads, class a road test, daily inspection and defects and more.
- No sign-up
- Every answer explained
- Independent · not a government site
- Set 2 of 7
- 40 questions
- Instant feedback
All 40 questions in this test
Every question and its answer choices. The correct answers and explanations appear when you take the test above.
What blood alcohol level is allowed when driving a vehicle that needs a Class A licence?
- Zero
- Under 0.02
- Under 0.05
- Under 0.08
Fog becomes too thick to continue. What should you do?
- Pull fully off the road and use flashers
- Stop in your lane with flashers on
- Follow the tail lights ahead closely
- Speed up to get out of it quickly
In daylight, how do you mark a load that overhangs the rear by 1.5 m or more?
- With a red flag or marker
- With an amber light
- With a yellow sign
- No marking is needed in daylight
On the backing test you stop, then continue backing without pulling forward. Is it a pull-up?
- Only near the cones
- No
- Only if over 5 seconds
- Yes, always
After new wheels are installed, when do wheel makers recommend re-checking the fasteners?
- After 1,000 km
- Only at the annual inspection
- Between 80 and 160 km
- At the next oil change
In a tractor-semitrailer, where is off-tracking the greatest?
- At the tractor's drive wheels
- At the tractor's front wheels
- At the semi-trailer's rear wheels
- At the landing gear
Who is responsible for making sure the cargo on your trailer is balanced and secured?
- The driver
- Only the shipper
- Only the receiver
- Only the carrier's dispatcher
What should you do just before reversing under a trailer?
- Release the trailer's spring brakes
- Raise the landing gear fully
- Connect the air lines first
- Check the path, flashers on, sound horn
A tire is burning on your trailer. What class of fire is that?
- Class D
- Class C
- Class A
- Class B
On a highway above 60 km/h, what minimum gap must a commercial vehicle keep behind other vehicles?
- 100 m (330 ft)
- 150 m (500 ft)
- 60 m (200 ft)
- 30 m (100 ft)
How many daily inspection items may you make errors on and still pass?
- None
- Five
- Three
- One
How close may you follow a fire truck responding to a call?
- No closer than 50 m
- No closer than 100 m
- No limit applies
- No closer than 150 m
Which of these may a daily log be?
- Handwritten, computer or recording device
- Only a verbal report given to dispatch
- Only an approved electronic device
- Only handwritten in blue or black ink
Switching off the 14-day cycle requires what consecutive off-duty period?
- 48 hours
- 96 hours
- 72 hours
- 36 hours
What should be your main way of controlling speed on a long downgrade?
- Engine braking
- Fanning the brakes
- Steady light braking
- Coasting in neutral
Where is the annual inspection decal placed on a semi-trailer?
- On the rear doors at eye level
- Inside the trailer on the bulkhead
- On the front left outside surface
- On the right side near the landing gear
Which headlights should you use in fog?
- No lights
- Parking lights only
- Low beams
- High beams
During your circle check you find a single broken leaf in a spring. What kind of defect is it?
- Major
- Not a defect
- Critical impound
- Minor
How many classes of dangerous goods are there?
- Seven
- Twelve
- Nine
- Five
Besides tractor-trailers, which other licence classes' vehicles may a Class A holder drive?
- Classes D and G
- Classes M and G
- Classes E and F buses
- Classes B and C buses
How many randomly chosen interior items are inspected after the in-cab check?
- One
- Two
- Four
- Eight
Which conditions can reduce clearance under a bridge that is normally adequate?
- Lower tire pressure
- A lighter load in the trailer
- Road repairs, ice or floods
- Driving at night
Your service brakes fail on a level road. What should you do first?
- Pull the trailer supply valve at speed
- Steer into the ditch
- Shut off the engine
- Downshift and use engine braking
Before backing, which steps should you take in the cab?
- Seat belt off, door open, engine off
- Trailer brakes on, clutch in, high gear
- Radio off, windows down, flashers, horn
- Radio up, windows shut, lights off
What does the handbook call using your truck's size to force your way through traffic?
- Blocking
- Platooning
- Tailgating
- Bluffing
From where do you confirm that the fifth-wheel jaws have closed around the kingpin?
- From the driver's seat using the mirrors
- From the trailer's open rear doors
- From a ladder on top of the trailer
- Under the trailer, behind the tractor
Which endorsement is needed on top of Class A to drive a tractor with air brakes?
- A Q restriction
- A Z endorsement
- A T endorsement
- An R condition
What does a steep-hill warning sign tell a truck driver?
- Passing is allowed uphill
- A lower gear may be needed
- Chains are required
- Trucks are banned on the hill
Which item is NOT required when the daily log is made by a recording device?
- The odometer readings
- The driver's name
- The cycle being followed
- The graph grid
Which licence is the only one that covers full air brake systems on both tractor and trailer and allows doubles?
- A Class BZ school bus licence
- A full Class AZ
- A Class DZ with an R condition
- A restricted Class AR with Z
What is the maximum fine for failing to go to a weigh scale when directed?
- $5,000
- $20,000
- $2,000
- $500
A tractor is found with a critical brake defect for the first time. How long can it be impounded?
- 15 days
- 30 days
- 60 days
- 5 days
What tests does a Class A driver under 80 take to renew, usually every five years?
- Road test only
- Medical and road test
- No tests at all
- Vision and knowledge
Before operating the starter on a manual tractor, what should you do?
- Pump the brake pedal several times
- Set the parking brake, clutch in, neutral
- Open the trailer supply valve fully
- Release the parking brake, select first
Why keep the tractor frame under the trailer before pulling fully clear?
- To keep the trailer lights on
- To save the tractor's fuel
- In case the trailer is unstable
- To keep the air lines connected
How much may you load onto a truck?
- Up to 10% over its plate weight
- No more than its licensed capacity
- Any weight if driving slowly
- As much as the axles can hold
What does a sign about doubled fines in a construction zone apply to?
- Using high beams in the work zone
- Speeding when workers are present
- All traffic offences at any time
- Parking on the shoulder in the zone
A yellow sign shows a truck on a curved arrow. What does it advise?
- Trucks may pass on the curve
- Trucks should slow for the curve
- No trucks allowed on the curve
- Truck entrance on the curve
How often should you check hub temperatures to catch overheating brakes?
- Only after a fire
- Only at inspection stations
- Once a week
- Every time you check tires
How often must a 40-year-old Class A driver submit a medical report?
- Every year
- Every five years
- Every three years
- Never
All Ontario Class A (AZ) practice tests
- Ontario Class A (AZ) Mock Exam 1 – 40 QuestionsUntimed practice · answers explained
- Ontario Class A (AZ) Mock Exam 2 – 40 QuestionsUntimed practice · answers explained
- Ontario Class A (AZ) Mock Exam 3 – 40 QuestionsUntimed practice · answers explained
- Ontario Class A (AZ) Mock Exam 4 – 40 QuestionsUntimed practice · answers explained
- Ontario Class A (AZ) Mock Exam 5 – 40 QuestionsUntimed practice · answers explained
- Class A licence and requirementsWhat a full Class A, restricted AR and manual-transmission-restricted licence let you drive, the 4,600 kg towing threshold, age, medical, MELT training and documents needed to apply.
- Size, weight, CVOR and documentsLegal width, height and length limits for semi-trailers and combinations, CVOR registration, documents a driver must carry, inspection stations, weigh scales, impoundment and dangerous goods.
- Daily inspection and defectsSchedule 1 circle checks within 24 hours, major versus minor defects, reporting, tire tread and wheel checks, annual inspection decals and the defect limits for tractor-trailer air, coupler and suspension items.
- Coupling and uncouplingStep-by-step uncoupling and coupling of a tractor and semi-trailer: securing both units, landing gear, fifth-wheel height, the tug test, visual checks of jaws and plate, air lines and the road-test scoring.
- Cargo securement and oversize loadsSecuring and re-checking loads (80 km, 3 hours, 240 km), NSC Standard 10, rear overhang markings and the flags and signs required for oversize loads.
About this practice test
How many questions are in Ontario Class A (AZ) practice test 2?
40 original multiple-choice practice questions covering keeping your class a licence, night, weather and emergencies, cargo securement and oversize loads, class a road test, daily inspection and defects, off-tracking, turns and backing, coupling and uncoupling, driver conduct and sharing the road, hours of service and logs, controls, braking and jackknife control, size, weight, cvor and documents, class a licence and requirements, signs, signals and markings. Each answer includes an explanation. This mixed practice set does not reproduce the official exam format or predict an official score.
Are the questions the same every time?
Yes. Practice test 2 always has the same 40 questions, so you can repeat it until you get them all right. The other 6 sets use different questions.
Are these real test questions?
No. The official question bank is not published. These are original questions written from the official handbook, which is what the real Ontario Class A (AZ) test is based on.