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Ontario Class D (DZ) overview

Ontario Class D (DZ): Weights, CVOR and documents

Gross, registered gross and manufacturer's weight ratings, size limits, CVOR, documents to carry, inspection stations and weigh scales, impoundment for critical defects and dangerous goods.

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Weights, CVOR and documents · Question 1Score 0/0

What does an operator's CVOR record include?

Study reference: MTO Truck Handbook (online edition, 2026), Ch. 1 Getting your licence — Definitions, CVOR, size and weight limits

All 20 questions in this test

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

  1. What does an operator's CVOR record include?

    1. The company's current bank balance
    2. All customer delivery addresses
    3. Collisions, convictions, inspections
    4. The driver's full medical history

  2. Which vehicle is NOT a motor vehicle under the handbook definition?

    1. A delivery truck
    2. A moped
    3. A farm tractor
    4. A motorcycle

  3. 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

  4. 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

  5. What must a driver carry while transporting dangerous goods?

    1. A photo of the cargo taken at loading
    2. A printed copy of the DG regulations
    3. The employer's training certificate
    4. A letter from the local fire department

  6. Besides a fine, what can happen if you fail to report to a weigh scale?

    1. Mandatory MELT training again
    2. Loss of your Z endorsement
    3. Up to 30 days' suspension
    4. A one-year ban from the CVOR

  7. How far may auxiliary equipment stick out without counting toward vehicle width?

    1. 50 cm
    2. 10 cm
    3. 1 m
    4. 30 cm

  8. Besides fixed stations, where else may trucks be inspected?

    1. Only at international border crossings
    2. At mobile inspection units
    3. Only at DriveTest centres
    4. Only inside the operator's garage

  9. Which factor is used in working out a truck's gross allowable weight?

    1. The spacing between its axles
    2. The driver's years of experience
    3. The fuel tank size
    4. The colour of the truck

  10. What does the CVOR system track?

    1. Operators' safety records
    2. Each driver's demerit points only
    3. The fuel tax paid by each carrier
    4. Toll payments made on Highway 407

  11. Which receipts are listed as supporting documents a driver should carry?

    1. Fuel, toll and lodging receipts
    2. No receipts are ever needed
    3. Grocery and pharmacy receipts
    4. Only receipts for tire purchases

  12. Which document must a straight-truck driver carry and surrender on demand?

    1. The CVOR certificate or a true copy
    2. The driver's high school diploma
    3. The shipper's latest tax return
    4. The truck's original purchase contract

  13. What identifies the class of dangerous goods on a truck or pallet?

    1. A flashing amber light
    2. The colour of the truck cab
    3. Safety marks, placards or labels
    4. The driver's uniform

  14. A truck is caught a second time within two years with critical defects. How long is the impoundment?

    1. 15 days
    2. 30 days
    3. 60 days
    4. 45 days

  15. Which defects can lead to a commercial vehicle being impounded?

    1. A dirty or faded licence plate
    2. A missing fuel receipt in the cab
    3. Critical brake or steering defects
    4. A cracked bracket on one mirror

  16. What is the fee for an original CVOR certificate?

    1. $32
    2. $255
    3. $500
    4. $90

  17. You refuse to unload part of an overweight load when ordered. What fine range applies?

    1. $50 to $500
    2. $25,000 to $50,000
    3. $1,000 to $2,000
    4. $200 to $20,000

  18. Which of these is a commercial motor vehicle under the handbook definition?

    1. A farm tractor working in a field
    2. A car with a roof rack for luggage
    3. A truck with a fixed delivery body
    4. A motorized snow vehicle on a trail

  19. What is registered gross weight?

    1. The weight a permit was issued for
    2. The truck's weight with an empty box
    3. The heaviest load ever carried
    4. The weight stamped on each tire

  20. Which vehicle is exempt from CVOR requirements?

    1. A 30-passenger bus
    2. A US-plated tractor in Ontario
    3. A 12,000 kg dump truck
    4. A motor home

Weights, CVOR and documents: key rules to remember

Our summary of what the official handbook says on this topic, in our own words. Read it before or after the practice questions above, then check the original chapter. Read the official chapter ↗

Definitions

  • Gross weight is the vehicle plus its load.
  • Registered gross weight is the weight a permit has been issued for under the Highway Traffic Act; the permit fee is based on it.
  • MGVWR (manufacturer's gross vehicle weight rating) is the gross weight set by the manufacturer, usually shown on a decal or plate on the cab.
  • A semi-trailer rests its front end on the towing vehicle; any trailer counts as a separate vehicle from the vehicle drawing it.
  • A commercial motor vehicle has a permanently attached truck or delivery body; ambulances, hearses, buses and tractors used to haul loads also count.
  • Farm tractors, road-building machines, motorized snow vehicles, power-assisted bikes and rail cars are not motor vehicles under the definition.

Size and weight limits

  • Maximum width of a commercial motor vehicle: 2.6 m (8.5 ft); mirrors are not counted if they stick out no more than 30 cm on each side.
  • Auxiliary equipment is not counted in the width if it sticks out no more than 10 cm and is not used to carry a load.
  • Semi-trailers are limited to 14.65 m (48 ft), or 16.2 m (53 ft) when the trailer and tractor meet special requirements.
  • No combination may be longer than 23 m (75.5 ft), except double-trailer combinations that meet special requirements.
  • Maximum height of any vehicle and load: 4.15 m (13.6 ft), to keep clearance at bridges and overpasses.
  • Gross allowable weight depends on number of axles, tire size, suspension, axle spacing, aggregate or non-aggregate load and steering-axle weight; the lowest of the calculated limits applies.
  • Drivers, operators and shippers can all be charged for an overweight commercial vehicle.

CVOR

  • CVOR (Commercial Vehicle Operator's Registration) tracks the safety performance of truck and bus operators in Ontario.
  • A CVOR certificate is needed for trucks with a registered or actual weight over 4,500 kg and buses designed for 10 or more passengers, including Ontario, US and Mexican plated vehicles.
  • The original CVOR certificate application fee is $255.
  • Ambulances, fire department vehicles, hearses, casket wagons and motor homes are exceptions; most personal-use pick-ups and short personal rentals are exempt too.
  • The CVOR record holds carrier information, reportable collisions, convictions and every fleet inspection, with or without defects.
  • Items such as collisions, convictions and inspections stay on the operator's CVOR record for five years from the date of the offence.
  • A poor CVOR record can lead to a warning letter, audit, interview and then sanctions up to suspension or cancellation of the certificate, plates and permits.

Documents to carry

  • Carry and surrender on demand: a licence of the right class, the registration (or true copy) for truck and trailer, the CVOR certificate (or true copy), the original insurance certificate, a daily inspection report completed within 24 hours with its schedule, and a daily log for today and the previous 14 days.
  • Supporting documents such as fuel, bridge, toll and accommodation receipts must also be carried.
  • A driver who stays within 160 km of the starting point and returns there the same day may not need a daily log, but hours-of-service limits still apply.

Inspection stations

  • If a truck inspection station is open, trucks must enter and stop; signs show whether it is open.
  • Vehicles are checked for weight, height, length, width and axle spacing, and the driver's licence class is checked.
  • Mobile inspection units can be set up anywhere for varying lengths of time.
  • Police or ministry officers can inspect a commercial vehicle at any time and place and may direct you to the nearest station; you must help with the inspection if asked.
  • Failing to go to a weigh scale when told: fine up to $20,000 and a possible licence suspension of up to 30 days.
  • Refusing to redistribute or remove part of a load, or obstructing a weighing: fine of $200 to $20,000.

Commercial Vehicle Impoundment Program

  • The Registrar can impound a commercial vehicle found with critical defects in brakes, steering, wheels and rims, tires, or frame and suspension.
  • Impoundment: 15 days for a first offence, 30 days for a second within two years, 60 days for a third or later within two years.
  • Fines for driving with critical defects can reach $20,000.

Dangerous goods

  • There are nine classes of dangerous goods.
  • The current employer trains drivers who carry dangerous goods and issues a certificate that must be carried while transporting them.
  • Safety marks, placards and labels identify the class and danger of the goods on trucks, cargo and pallets.

Long commercial vehicles

  • A long commercial vehicle (LCV) is a double-trailer combination up to 40 m long, identified by a placard on the rear; expect extra length and limited speed when passing one.

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