Hours-of-service rules apply to commercial vehicles over what weight?
Ontario Class A (AZ) Practice Test 6
40 questions on hours of service and logs, controls, braking and jackknife control, coupling and uncoupling, driver conduct and sharing the road, keeping your class a licence and more.
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- Every answer explained
- Independent · not a government site
- Set 6 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.
Hours-of-service rules apply to commercial vehicles over what weight?
- 4,500 kg
- 11,000 kg
- 14,000 kg
- 2,500 kg
When should you NOT engage the inter-axle differential lock?
- On a gravel road at low speed
- When starting on a wet ramp
- Before a slippery stretch
- While the wheels are spinning
What is the first step when uncoupling a tractor and semi-trailer?
- Lower the landing gear
- Unlock the fifth wheel
- Disconnect the air lines
- Secure both units
Two vehicles stop at an all-way stop at the same time. Who goes first?
- The vehicle on the right
- The vehicle on the left
- The larger vehicle
- The vehicle going straight
What happens if a Class A driver does not file a required medical report?
- Nothing happens until renewal time
- The licence is downgraded
- A warning letter only
- A small fine on the next renewal
May you drive a tractor-trailer that has a major defect?
- Yes, if the trailer is empty
- No, not until it is repaired
- Yes, if you report it by phone
- Yes, to the next town for repairs
What must you hand the examiner before the road test begins?
- A letter from your MELT training school
- The trailer's original purchase invoice
- Your last 14 days of fuel receipts
- A daily inspection report and schedule
After at least 8 consecutive hours off, you may not drive once how much time has elapsed?
- 24 hours
- 14 hours
- 16 hours
- 13 hours
Which time is a peak period for drowsy-driving collisions?
- 8 a.m. to 10 a.m.
- 6 p.m. to 8 p.m.
- 2 a.m. to 6 a.m.
- 11 a.m. to 1 p.m.
How much forward-and-back movement between the fifth wheel's upper and lower coupler is a major defect?
- More than 1 in. (25 mm)
- More than 1/2 in. (13 mm)
- Any movement at all
- More than 1/8 in. (3 mm)
A small car is passing your rig. What is the courteous thing to do?
- Slow a little to let it in
- Flash your high beams as a warning
- Speed up so it passes sooner
- Move left to block it from passing
Where is a vehicle's MGVWR usually found?
- On a decal or plate on the cab
- In the daily inspection schedule
- On the driver's licence card
- On the CVOR certificate only
What might a sign banning heavy trucks between 7 p.m. and 7 a.m. mean for you?
- You must use your flashers on that road
- You may use it if your trailer is empty
- You must drive under 40 km/h on that road
- You may not use that road then
You must report a collision to police when property damage is over what amount?
- $1,000
- $5,000
- $10,000
- $2,000
Within how many hours before driving must a Schedule 1 inspection have been done?
- 8 hours
- 12 hours
- 48 hours
- 24 hours
How long can a long commercial vehicle (LCV) double-trailer combination be?
- Up to 23 m
- Up to 53 m
- Up to 30 m
- Up to 40 m
During a left turn, which mirror should you use to watch the trailer's path?
- The inside rear-view mirror
- No mirror; look back over your shoulder
- The left outside mirror
- The right outside mirror
A Class A licence lets you tow vehicles whose total gross weight is more than how much?
- 11,000 kg
- 4,600 kg
- 14,000 kg
- 2,000 kg
Signals are flashing on a sign showing a truck and an inspection station. What must you do?
- Slow to 40 km/h and pass
- Use the left lane
- Turn on your flashers
- Enter the inspection station
When are you NOT required to inspect your load during the trip?
- It is sealed and you may not open it
- The load weighs less than 4,500 kg
- It is a short local trip under 50 km
- It was loaded by the shipper's forklift
A 70-year-old AZ driver has an at-fault collision. What must they pass?
- Only a new medical report form
- Vision, knowledge and road tests
- Only a vision test at ServiceOntario
- Only the Z endorsement practical test
You see a gap between the trailer upper plate and the fifth wheel. What does it mean?
- The trailer is properly seated
- The coupling is not secure
- The landing gear is still down
- The air suspension is inflated
When should you raise the landing gear after coupling?
- After checking the hook-up
- Only once you reach the delivery point
- After driving the first kilometre
- Before backing under the trailer
On a narrow street, you must swing into the left lane to turn right. What must you watch for?
- Trucks waiting to pass you on the left
- Pedestrians on the far corner only
- Traffic lights changing behind your trailer
- Cyclists or cars moving up on your right
Which of these items is recommended but not mandatory?
- A stroke-measuring device
- Protective eyewear
- A way to hold the pedal down
- Wheel chocks
In a turn, how do the trailer's rear wheels track compared with the tractor's front wheels?
- They swing outside the front wheels
- They cut inside the front wheels' path
- They follow exactly the same path
- They track behind the steering axle only
A hill hides your disabled truck within 150 m. What should you add?
- An extra warning device
- A note on the windshield
- A second set of flashers
- Nothing more is needed
How often must Class A drivers aged 80 or over pass vision, knowledge and road tests?
- Before every renewal
- Every ten years
- Only after a collision
- Only once at 80
On a curve to the left, why keep the front wheels near the right edge?
- So the load shifts less in the trailer
- So the trailer brakes can cool down faster
- So you can see the left mirror much better
- So rear wheels stay out of the other lane
You take the Class A road test in an automated-manual tractor. What happens?
- You must retest within 30 days
- You receive a full AZ licence anyway
- The test is cancelled on arrival
- A transmission restriction is added
Which situation is part of the on-road section of the test?
- A gravel logging road
- An expressway section
- A border crossing
- A car wash
Your tractor has a clutch brake. When should you push the clutch pedal to the floor?
- Never, under any circumstances at all
- On every upshift while you are moving
- Only at a stop, to engage low gear
- On every downshift when climbing hills
May a tractor-trailer with two people aboard use an HOV lane?
- No, large trucks are not allowed
- Yes, at night only
- Yes, if under 23 m long
- Yes, with two or more people
How can an unevenly loaded trailer start a fire?
- It cross-connects the air lines
- It leans and rubs on a tire
- It drains the battery
- It overheats the engine
What does the trailer hand valve let you do?
- Park the combination safely
- Raise the fifth wheel
- Apply only the trailer brakes
- Release the tractor spring brakes
A learner wants to practise driving a tractor-trailer. Who must ride with them?
- Any passenger aged 21 or older
- Any driver who holds a full G licence
- A driver with a valid Class A licence
- A licensed mechanic or technician
What is the standard maximum length of a semi-trailer?
- 12.5 m (41 ft)
- 14.65 m (48 ft)
- 23.0 m (75.5 ft)
- 18.0 m (59 ft)
Before lowering the landing gear, what should you check about the ground?
- That it is wet so the pads slide
- That it is level and firm
- That it is gravel, not pavement
- That it is sloped toward a drain
What does a flashing green light mean?
- Pedestrians may now cross the road
- The light is about to turn red
- Proceed with caution as at an all-way stop
- Advance green; oncoming has red
What is the error limit for the on-road and backing parts together?
- 30 errors
- 50 errors
- 10 errors
- 20 errors
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 6?
40 original multiple-choice practice questions covering hours of service and logs, controls, braking and jackknife control, coupling and uncoupling, driver conduct and sharing the road, keeping your class a licence, daily inspection and defects, class a road test, night, weather and emergencies, size, weight, cvor and documents, signs, signals and markings, off-tracking, turns and backing, class a licence and requirements, cargo securement and oversize loads. 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 6 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.