Ontario Class D (DZ) overview

Ontario Class D (DZ) Practice Test 3

40 questions on daily inspection and defects, off-track, turns, clearances and backing, class d road test, fuel-efficient driving, hov and branding, driver conduct and sharing the road and more.

  • Set 3 of 7
  • 40 questions
  • Instant feedback
0/40
Practice test 3 · Question 1Score 0/0

How does the inspection schedule divide defects?

All 40 questions in this test

Every question and its answer choices. The correct answers and explanations appear when you take the test above.

  1. How does the inspection schedule divide defects?

    1. Into legal and illegal
    2. Into red and green
    3. Into minor and major
    4. Into front and rear
  2. Before entering a two-lane roundabout, a large truck may need to do what?

    1. Use the shoulder
    2. Occupy both lanes
    3. Stop and reverse
    4. Sound its horn
  3. Which applicants skip the daily inspection on the road test?

    1. Class D with RV restriction
    2. Class D over age 65
    3. Nobody skips it
    4. Class D with automatic trucks
  4. Which engine speed range saves the most fuel on the highway?

    1. Highest gear, low revs
    2. Low gear, high revs
    3. Neutral when possible
    4. Maximum governed rpm
  5. When may a cyclist use the full lane?

    1. Never on city streets
    2. To avoid hazards such as potholes
    3. Only when riding with others
    4. Only on Sundays
  6. Roughly how much can professional, smooth shifting improve operating costs?

    1. About 60 per cent
    2. It has no effect
    3. About 30 per cent
    4. About 3 per cent
  7. Which licence class covers any regular bus and also allows Class D trucks?

    1. Class E
    2. Class C
    3. Class G
    4. Class F
  8. Your loaded flatbed is 4.3 m tall. What is the problem?

    1. Only a problem on 400-series roads
    2. Nothing, the limit is 4.5 m
    3. Only a problem at night
    4. It exceeds the 4.15 m height limit
  9. What marks the boundaries in the backing test?

    1. Cones
    2. Painted lines only
    3. Rope barriers
    4. Parked cars
  10. Your licence requires corrective lenses. What must you do on the road test?

    1. Bring a doctor's note instead
    2. Remove them for the vision check
    3. Keep them in the glove box
    4. Wear them while driving
  11. A local driver is exempt from keeping a log. Who must keep a record of their day?

    1. The police
    2. The customer
    3. The operator
    4. Nobody
  12. Why is fanning the brakes dangerous on a long downgrade?

    1. It can drop air below safe levels
    2. It locks the steering column
    3. It turns on the ABS warning lamp
    4. It overheats the engine oil quickly
  13. Two straight trucks make the same turn. Which one off-tracks more?

    1. The one with the heavier load
    2. The one with air brakes
    3. The one with the longer wheelbase
    4. The one with wider tires
  14. An orange sign warns of milled or grooved pavement. What can be affected?

    1. Your radio reception
    2. Your fuel gauge
    3. Your stopping ability
    4. Your mirror alignment
  15. Which items can affect your driving, according to the handbook?

    1. Chewing gum
    2. Vitamin C tablets
    3. Allergy and cold remedies
    4. Bottled water
  16. What must a Class D holder add to drive a truck fitted with air brakes?

    1. A T endorsement
    2. An R condition
    3. A Q condition
    4. A Z endorsement
  17. How should you apply the brakes for a smooth stop in a loaded truck?

    1. Pump rapidly from the very start
    2. Steady, then ease off
    3. Light at first, then very hard
    4. Only with the parking brake lever
  18. Besides the pre-trip check, what must a driver do about vehicle condition?

    1. Check it only at weigh scales
    2. Nothing until the next day
    3. Monitor it throughout the trip
    4. Check it only after a collision
  19. In a hard stop with ABS, the pedal pulses. What should you do?

    1. Release the pedal quickly
    2. Pump the pedal rapidly
    3. Keep pressing firmly
    4. Shift into neutral at once
  20. After driving through a flooded stretch, what should you do?

    1. Speed up to dry the tires
    2. Test the brakes to dry them
    3. Drain the fuel tank
    4. Turn off the engine
  21. Your renewal form never arrived. Whose responsibility is it to keep a valid licence?

    1. Your employer's
    2. Yours
    3. Your insurer's
    4. The ministry's
  22. What colour are guide (information and direction) signs?

    1. Green with white letters
    2. Orange with black letters
    3. Yellow with black letters
    4. Red with white letters
  23. How should you start a diesel truck to save fuel?

    1. Zero throttle, no-throttle gear
    2. Pump the throttle three times
    3. Start it in the top gear
    4. Hold the throttle wide open
  24. What material must an oversize load sign be made of for night travel?

    1. Cloth banner material on a rope
    2. Plain painted plywood sheeting
    3. High-intensity reflective material
    4. Clear plastic with paper letters
  25. Testing the low-air warning, what must you do with the ignition key?

    1. Turn it to start and hold
    2. Remove it
    3. Turn it on
    4. Nothing; it does not matter
  26. Where is tire tread depth measured for the minimum rule?

    1. At the edge of the sidewall
    2. Only at the centre rib
    3. Across the whole tire width
    4. In two adjacent tread grooves
  27. What should you do if you think a fire is caused by a short circuit?

    1. Open the hood and leave it
    2. Pour water on the wiring
    3. Remove the battery cables
    4. Start the engine to clear it
  28. How should your tires be inflated for best fuel economy?

    1. As low as safely possible
    2. 10 psi below the maximum
    3. As the tire maker says
    4. Based on the load only
  29. What is checked on trucks at an inspection station?

    1. Only the paint and the lettering
    2. Only the driver's licence photo
    3. Only the truck's radio licence
    4. Weight, size and licence class
  30. A local driver ends the day at a different yard from where they started. Do they need a daily log?

    1. Yes, they must return to the start
    2. No, if they drove a straight truck
    3. No, if they worked under 13 hours
    4. No, if they stayed within 160 km
  31. What does a slow-moving vehicle sign look like?

    1. A green rectangle with an arrow
    2. A red octagon with white letters
    3. A yellow diamond showing a tractor
    4. An orange triangle with a red border
  32. Where should you avoid stopping or parking?

    1. In a highway rest area
    2. On the right shoulder when needed
    3. In a marked truck parking bay
    4. Behind a vehicle about to reverse
  33. Before you drive off with a load of lumber, what should you know?

    1. Only the sale price of the load
    2. Only the final delivery address
    3. Only the shipper's phone number
    4. Its type and how to secure it
  34. Which commercial vehicles must follow NSC Standard 10 on Ontario roads?

    1. Only vehicles crossing borders
    2. Every one carrying cargo
    3. Only trucks over 11,000 kg
    4. Only flatbeds
  35. You have driven 11 hours and been on duty 14 hours today. May you drive more?

    1. Yes, up to 13 hours of driving
    2. Yes, after a 30-minute break
    3. No, 14 on-duty hours are reached
    4. Yes, until 16 hours on duty
  36. Why shouldn't you drive on or block the shoulder of a freeway in traffic?

    1. It sets off the speed cameras
    2. It is reserved for city buses
    3. Emergency vehicles may use it
    4. It wears out your tires faster
  37. Your licence was suspended five years ago and never reinstated. What must you do to drive a DZ truck?

    1. Get a doctor's note and renew
    2. Pay the old fine and renew online
    3. Go through graduated licensing
    4. Take only a Class D road test
  38. What is the fee for an original CVOR certificate?

    1. $32
    2. $255
    3. $500
    4. $90
  39. Passing another big truck on a multi-lane highway takes minutes because speeds are close. What does the handbook say?

    1. Flash lights so the other truck slows
    2. Avoid it; it blocks traffic too long
    3. Use the shoulder to speed it up
    4. It is the safest way to pass
  40. Where do you place chocks when parking a straight truck?

    1. Front and back of a rear wheel
    2. Against the rear bumper
    3. Only behind a front wheel
    4. Under the fuel tank

All Ontario Class D (DZ) practice tests

About this practice test

How many questions are in Ontario Class D (DZ) practice test 3?

40 original multiple-choice practice questions covering daily inspection and defects, off-track, turns, clearances and backing, class d road test, fuel-efficient driving, hov and branding, driver conduct and sharing the road, engine, gears and braking technique, class d licence and requirements, weights, cvor and documents, hours of service and logs, brake checks: hydraulic and air, signs, signals and markings, keeping your class d licence, night, weather and emergencies, cargo securement and 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 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 D (DZ) test is based on.