Which vehicles are exempt from the Mandatory Vehicle Branding Program?
Ontario Class A (AZ) Practice Test 3
40 questions on keeping your class a licence, coupling and uncoupling, night, weather and emergencies, class a road test, daily inspection and defects and more.
- No sign-up
- Every answer explained
- Independent · not a government site
- Set 3 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.
Which vehicles are exempt from the Mandatory Vehicle Branding Program?
- Trailers
- Tractors over 11,000 kg
- Dump trucks
- School buses
After charging the trailer with air, how do you check the connections for leaks?
- Drive and watch the gauges
- Engine off, listen at each line
- Drain the trailer tanks
- Spray soap on the fifth wheel
Within what distance of an oncoming vehicle must you switch to low beams?
- 500 m
- 300 m
- 150 m
- 60 m
You arrive without wheel chocks. What happens?
- You lose 5 points but may continue
- The examiner lends you a set of chocks
- You may skip the air brake items instead
- The test is out of order
With the trailer supply valve closed, air escapes from the service gladhand when braking. What is defective?
- The tractor protection valve
- The trailer spring brakes
- The air dryer purge valve
- The front wheel-limiting valve
What happens if you commit a moving violation during the road test?
- It does not count on the test
- You lose two points only
- The examiner warns you once
- You do not pass
The low air-pressure warning comes on while driving. What should you do?
- Drive to the next truck stop
- Pump the brakes to raise pressure
- Stop at once in the safest place
- Pull the trailer hand valve
What is balanced braking in a tractor-semitrailer?
- Foot valve applies both units equally
- Only the drive axles brake
- The hand valve and pedal cancel out
- The trailer brakes before the tractor
Several weight formulas apply to your truck. Which result is the maximum gross allowable weight?
- The lowest of them
- The highest of them
- The registered weight plus 10%
- Their average
What is the industry colour for the trailer service air line?
- Blue
- Yellow
- Red
- Green
What is the minimum tread depth on a rear tire of a commercial vehicle?
- 1.5 mm
- 0.5 mm
- 3 mm
- 4 mm
In which gear should the landing-gear crank handle be stowed?
- Neutral
- Reverse
- High gear
- Low gear
A sign shows "5 t" with an axle symbol. What does it restrict?
- Trailers to 5 m long
- Total vehicle weight to 5 tonnes
- Load per axle to 5 tonnes
- Speed to 50 km/h
Where can police or ministry officers carry out a safety inspection of your truck?
- Only at a permanent inspection station
- Only during daylight hours
- Only at the operator's terminal
- At any time and place
Below 0°C, how long should you warm up the engine before driving?
- 3 to 5 minutes
- 1 minute
- 7 to 10 minutes
- 20 to 30 minutes
Which backing manoeuvre is the easiest and safest?
- Backing around a corner
- Blind-side alley dock
- Straight backing
- Offset backing to the right
How does a tractor-trailer's stopping distance compare with an average car's?
- About the same
- About half as long
- About ten times as long
- About twice as long
You are waiting at the dock while your trailer is unloaded. What duty status is this?
- On duty, driving
- On duty, not driving
- Off duty
- Sleeper berth
How is a pedestrian crossover marked?
- A single solid yellow line across the road
- Green paint on the road and a stop sign
- White double lines, X marks, yellow lights
- Red bricks and a flashing red light overhead
A moose is standing on the road ahead. What should you do?
- Slow down and sound the horn
- Swerve around it at speed
- Flash your lights and accelerate
- Stop and get out to move it
What does an orange triangle with a red border on the back of farm machinery mean?
- It is wider than 3 m
- It is carrying dangerous goods
- It is about to turn left
- It travels at 40 km/h or less
An "OVERSIZE LOAD" sign must have letters at least how high?
- 100 mm
- 500 mm
- 200 mm
- 50 mm
Why avoid using the differential lock when it is not needed?
- It wears tires and strains axles
- It disables the ABS
- It raises the trailer height
- It drains the air tanks
Which national standard sets Ontario's cargo securement rules?
- ISO Standard 9001
- CSA Standard 1
- NSC Standard 11
- NSC Standard 10
At a red light with a painted bike box ahead, where must you stop?
- On the bike lane line
- Behind the bike box
- Inside the bike box
- Past the crosswalk
What must new Class A applicants complete before the Class A road test?
- Mandatory entry-level training (MELT)
- A dangerous goods certificate course
- A Z endorsement practical exam
- A one-year Class D driving period
What is the movement limit between a pintle hook and drawbar eye?
- 1 in. (25 mm)
- 3/8 in. (10 mm)
- 1/4 in. (6 mm)
- 1/2 in. (13 mm)
Who chooses whether a driver follows the 7-day or the 14-day cycle?
- The operator
- A police officer
- The driver
- The shipper
In an offset back, when do you turn the steering wheel fully the other way?
- When tractor tires line up with the landing gear
- When the trailer first touches the cone
- As soon as the trailer starts moving backward
- After backing up exactly one trailer length
You follow the 7-day cycle and want to start a fresh one. How long must you be off duty in a row?
- 48 hours
- 36 hours
- 72 hours
- 24 hours
What makes a combination a full Class A configuration?
- Full air brakes on tractor and trailer
- A trailer at least 16.2 m long
- A tractor fitted with a sleeper berth
- An automatic transmission and ABS
What increases the amount of off-track?
- A heavier load
- Wider tires
- Higher air pressure
- A longer wheelbase
Before any trip, what should you check on a van trailer besides the cargo itself?
- The condition of the paint on the roof
- The shipper's business licence number
- Doors latched; racks and tarps secured
- The tire brand fitted on each axle
How many hours off duty must a driver have in a day?
- 10
- 6
- 8
- 12
When must a Class A applicant provide a satisfactory medical certificate?
- Only when crossing into the United States
- On application and periodically after
- Only after a reportable collision
- Only if over the age of 65
A written-off tractor is branded "Irreparable". What does that mean?
- It can still be used off-road on farms
- Parts or scrap only
- It needs only a safety standards check
- It can be rebuilt and driven again
Which trucks need a valid transponder to use Highway 407 ETR?
- Only dangerous goods trucks
- Trucks over 5 tonnes
- All trucks with trailers
- Trucks over 10 tonnes
What are the three main parts of the Class A road test?
- Coupling, loading and fuelling
- Inspection, backing and on-road driving
- Parking, logbook and weigh scale
- Vision, written and medical tests
Several plows are staggered across a freeway clearing all lanes. What should you do?
- Pass between them carefully
- Pass on the right shoulder
- Flash lights so they move over
- Stay behind; never pass between
What is the maximum width of a commercial motor vehicle in Ontario?
- 3.0 m (10 ft)
- 3.5 m (11.5 ft)
- 2.6 m (8.5 ft)
- 2.4 m (8 ft)
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 3?
40 original multiple-choice practice questions covering keeping your class a licence, coupling and uncoupling, night, weather and emergencies, class a road test, daily inspection and defects, controls, braking and jackknife control, size, weight, cvor and documents, signs, signals and markings, off-tracking, turns and backing, driver conduct and sharing the road, hours of service and logs, cargo securement and oversize loads, class a licence and requirements. 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 3 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.