TDG practice test – printable questions and answers

50 TDG questions on classes, shipping documents, placards, training and reporting, with a separate answer key. Print it or save it as a PDF. Free, no sign-up.

No sign-up
Every answer explained
Independent · not a government site

50 questions
Answer key included
Free, no sign-up

Some employers hand out a TDG review sheet before the course quiz, and many people remember rules better when they write the answers by hand. This page puts 50 original TDG questions on one printable sheet, drawn from all ten of our topics: the law and key terms, the nine classes, classification and Schedule 1, shipping documents, labels and placards, means of containment, training certificates, ERAPs, reporting and the special cases.

The answers start on a new page after the last question, each with a short explanation and the part and section of the TDG Act or Regulations it comes from, so you can check the rule in the official text. Remember that there is no government TDG exam: your employer or training provider writes its own quiz, so treat a high score here as proof that you understand the rules, not as a copy of any course test. Press Print and choose Save as PDF to keep a copy.

Jump to the answer key

1.Which goods on a truck are outside the TDG Regulations under the vehicle operation special case?
1. Gasoline delivered to a farm in a tote
2. Ammunition used by the driver while hunting
3. Diesel in the truck's permanently installed fuel tank
4. Spare diesel carried in drums for a customer
2.How long must a copy of the 30-day follow-up report be kept?
1. One year
2. Five years
3. Two years
4. Six months
3.What is a consolidation bin used for?
1. Mixing two dangerous goods together before they are shipped
2. Storing empty drums at a terminal until they are cleaned
3. Collecting leaks from a damaged rail tank car until a response team can arrive
4. Keeping small containers from shifting in a road vehicle, with room to add or remove some
4.A shipper prepares dangerous goods for air transport. How long is the training certificate valid?
1. 36 months
2. 24 months
3. 12 months
4. 48 months
5.Which load still needs placards even though it weighs under 500 kg gross?
1. A corrosive liquid in Class 8
2. A toxic gas in Class 2.3
3. A Class 9 lithium battery load
4. A flammable liquid in Class 3
6.Who must classify dangerous goods before they are transported from a Canadian site?
1. The consignor
2. The consignee
3. The carrier
4. The driver
7.A truck carrying dangerous goods is in a crash and you need expert advice by phone. Which number does Transport Canada give for CANUTEC from a cellphone?
1. *911
2. *226
3. *888
4. *666
8.An asphalt-free liquid that is not otherwise dangerous is shipped at 120 °C. Which class can it fall into?
1. Class 9, because it is carried hot
2. Class 8, because heat can corrode
3. Class 3, because it is a liquid
4. It is not dangerous goods at all
9.In what order must the description of each dangerous good appear on a shipping document?
1. Packing group, shipping name, primary class, UN number, subsidiary class
2. UN number, shipping name, primary class, subsidiary class, packing group
3. Primary class, packing group, UN number, shipping name, subsidiary class
4. Shipping name, UN number, packing group, primary class, subsidiary class
10.A single tank holds goods of one UN number in a quantity above the Schedule 1 column 7 figure. What applies?
1. A DANGER placard may be used
2. An approved ERAP is required
3. The 500 kg exemption applies
4. No placard is needed
11.Under the 500 kg special case, which Parts of the Regulations still apply?
1. Part 6 training and Part 8 reporting still apply
2. Only Part 3 documents continue to apply
3. Only Part 7 on ERAPs continues to apply
4. No part of the Regulations applies at all
12.Who receives the first emergency report of a road release?
1. The consignee named on the shipping document for the load
2. The provincial ministry of labour
3. The trucking company's insurer
4. The local authority that responds to emergencies there
13.Why must dangerous goods be loaded and secured on a vehicle?
1. To make unloading faster at the receiving dock
2. To let the carrier fit more cargo on each trip and save on fuel costs
3. To keep the placards visible from the driver's seat
4. To prevent damage that could lead to a release in normal transport
14.A TDG inspector stops a truck and asks the driver for a training certificate. When must the driver show it?
1. Within 24 hours
2. Within 15 days
3. Within 30 days
4. Immediately
15.A van carries 400 kg gross of Class 8 corrosives that do not need an ERAP. Are placards required on the van?
1. Yes, any amount of Class 8 needs placards on all four sides
2. No, loads of 500 kg gross or less are exempt from placards
3. No, because Class 8 never needs placards on a road vehicle
4. Yes, unless the driver holds a valid TDG certificate
16.What does the code E0 in column 6(b) of Schedule 1 mean?
1. The goods are not permitted as an excepted quantity
2. The goods are exempt from every part of the Regulations
3. The goods may be shipped in any quantity by air
4. The goods need no label when shipped in small boxes
17.What is the maximum fine on summary conviction for a first offence under the TDG Act?
1. $50,000
2. $5,000
3. $100,000
4. $25,000
18.A substance gives off flammable gas when it gets wet. Which division covers it?
1. Class 4.2
2. Class 5.1
3. Class 4.3
4. Class 4.1
19.In which languages may TDG shipping document information be written?
1. English only
2. English or French
3. Any language the carrier reads
4. French and English together
20.Which goods are ERAPs designed for?
1. All goods carried on a highway
2. Only goods sold to the public
3. Certain higher-risk dangerous goods
4. Only goods shipped by air
21.What does the limited quantity mark look like?
1. An orange rectangle showing the four-digit UN number
2. A red diamond with a black flame symbol and the class number 3 at the bottom
3. A hatched square with a capital E inside a circle
4. A square on point, black at top and bottom, white in the centre
22.Within what time must the written follow-up report reach the Minister?
1. 30 days
2. 90 days
3. 15 days
4. 24 hours
23.What makes a container a UN standardized means of containment?
1. It displays the UN packaging marks and meets the applicable standard
2. It was approved by the United Nations for one shipment
3. It is used only for international air shipments
4. It is painted blue and stencilled with the letters UN on the top and sides
24.Who issues a TDG training certificate to an employee?
1. CANUTEC
2. The employer
3. Transport Canada
4. The provincial licensing office
25.What is the normal minimum side length of a label on a package?
1. 25 mm
2. 50 mm
3. 250 mm
4. 100 mm
26.What does the word "Forbidden" in column 3 of Schedule 1 mean?
1. The goods must not be imported, offered, handled or transported
2. The goods may be shipped only with a Transport Canada escort
3. The goods may travel only by road vehicle and never by aircraft or vessel
4. The goods may be shipped only as a limited quantity
27.Which of these can be a "means of containment" under the TDG Act?
1. The loading dock where pallets are staged for pickup
2. The driver's cab where the shipping document is kept
3. The cargo tank that forms part of a highway tank truck
4. The office where the shipping document is printed
28.What is the difference between Class 5.1 and Class 5.2?
1. 5.1 is toxic substances; 5.2 is infectious substances
2. 5.1 is oxidizing substances; 5.2 is organic peroxides
3. 5.1 is flammable solids; 5.2 is water-reactive solids
4. 5.1 is compressed gases; 5.2 is refrigerated gases
29.A consignor wants to use CANUTEC's number as its 24-hour number. What does it need?
1. Written permission from CANUTEC
2. An approved ERAP for every product
3. A letter from its insurance company
4. Nothing: anyone may list CANUTEC
30.Which rail shipment needs an approved ERAP under the special flammable liquids rule?
1. Gasoline in a tank car holding more than 10 000 L
2. Diesel in 20 L jerrycans on a delivery van
3. Gasoline in a pickup truck's own fuel tank
4. Ethanol with 10% alcohol in small retail bottles
31.Which alcoholic beverages are exempt from Parts 3 to 10 of the Regulations?
1. Those shipped by air for export only
2. Those sold in bottles larger than 5 L
3. Those with 24% alcohol or less by volume
4. Only beer and wine under 5% alcohol
32.A cylinder of a Class 2.2 gas leaks during transport. Which quantity triggers the emergency report?
1. More than 500 kg
2. More than 30 L
3. More than 150 kg
4. Any quantity
33.Small containers for Class 8 corrosives are selected and used under which standard?
1. CGSB-43.151 for explosives
2. CSA B340, the standard used for gas cylinders
3. CGSB-43.150 (or CGSB-43.146 for IBCs)
4. CSA B622 for ton containers
34.A US-licensed truck driver is trained under 49 CFR and drives into Canada. Is that US training record valid here?
1. Only for goods that need no placards at all
2. No, a Canadian employer must issue a new one at the border
3. Yes, while it is valid in the United States
4. Only if CANUTEC stamps it at the first stop
35.What is the main difference between a label and a placard?
1. Labels are for road transport; placards are for rail only
2. Labels are optional; placards are required by law
3. Labels show the UN number; placards never show it
4. Labels go on small containers; placards go on large ones
36.What does column 6(a) of Schedule 1 give for most dangerous goods?
1. The UN number
2. The ERAP index
3. The limited quantity index
4. The packing group
37.Which act is "offering for transport" dangerous goods?
1. Unloading the drums at the receiving warehouse dock
2. Driving the loaded truck from the plant to a customer
3. Preparing the goods so a carrier can take possession of them
4. Reading the Emergency Response Guidebook at a spill
38.Which gases belong in Class 2.3?
1. Gases that contain oxygen and feed a fire
2. Gases that are shipped as refrigerated liquids
3. Gases known to be toxic or corrosive to humans
4. Gases that ignite in a 13% mixture with air
39.A shipping document lists both dangerous and non-dangerous goods. Which option meets the Regulations?
1. Listing them in any order with no special marking
2. Listing the dangerous goods last, in smaller print, under "Other"
3. Placing the dangerous goods on the back of the page
4. Listing the dangerous goods first under the heading "Dangerous Goods"
40.Which ERAP details go on the shipping document?
1. The ERAP reference number and telephone number
2. The names of every emergency responder on the team
3. The date the plan was last tested in a drill
4. The full text of the plan and its approval letter
41.A homeowner buys propane cylinders and paint at a store and drives them home. Which special case usually applies?
1. The two-properties rule for distances under 3 km
2. The 500 kg placarding exemption for commercial loads
3. The 150 kg gross mass special case for consumer quantities
4. The ERAP exemption for emergency response vehicles
42.Which outcome makes the release report to CANUTEC required?
1. The driver had to call the dispatcher for help
2. The truck arrived late at its destination
3. People were evacuated or sheltered in place
4. The spill was cleaned up within an hour
43.What is a compliance mark?
1. A placard that shows the primary class of the dangerous goods inside
2. A mark required by a safety standard, showing the container meets it
3. A stamp showing the driver completed TDG training
4. A sticker that shows the shipment passed a TDG inspection
44.A certificate covers transport by road. When does it expire?
1. 24 months after it is issued
2. 36 months after it is issued
3. 60 months after it is issued
4. 12 months after it is issued
45.How must labels and placards be displayed?
1. As a square set on one point, like a diamond
2. As a rectangle with the long side horizontal
3. As a triangle pointing upward
4. As a circle centred on the side of the container
46.How is a UN number written?
1. A colour code and the packing group
2. Two digits for the class and a letter
3. The letters UN followed by four digits
4. Three letters followed by two digits
47.Who is a "carrier" under the TDG Regulations?
1. A person who receives the goods once they are no longer in transport
2. A person who has or will have possession of the goods while they are in transport
3. A person who designs and tests the means of containment for the goods
4. A person who signs the consignor's certification on each shipping document
48.A flammable liquid boils at 80 °C and has a flash point of 15 °C. Which packing group applies?
1. Packing Group III
2. Packing Group II
3. Packing Group IV
4. Packing Group I
49.What must the "24-Hour Number" on a shipping document allow a caller to do?
1. Reach someone with technical information about the goods immediately
2. Leave a message that the consignor returns the next business day
3. Book an inspection appointment with a Transport Canada office near the route
4. Report the shipment's location to the receiving customer
50.Who approves an emergency response assistance plan?
1. The Minister of Transport
2. The provincial fire marshal
3. CANUTEC's duty adviser
4. The consignor's insurer

Answer key with explanations

1. C — Diesel in the truck's permanently installed fuel tank
Fuel for propulsion in a permanently installed tank, and items like air bags, flares and fire extinguishers needed for the vehicle, are exempt. Ammunition and delivered fuel are not covered.
Exemptions and special cases · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 10 Special cases, s. 1.27 — fuel and safety equipment
2. C — Two years
A copy of the 30-day follow-up report is kept for two years and made available to an inspector within 15 days of a written request. Some changes within one year must also be reported.
Reporting releases, loss and theft · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 9 Reporting, s. 8.8 — keeping the follow-up report
3. D — Keeping small containers from shifting in a road vehicle, with room to add or remove some
A consolidation bin is used in a road vehicle to secure small means of containment so they do not shift, while letting containers be added or removed during transport.
Means of containment · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 6 Means of containment, s. 1.4 — consolidation bin
4. B — 24 months
For transport by aircraft, a training certificate expires 24 months after its date of issue, compared with 36 months for road, rail and marine.
Training and the TDG certificate · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 7 Training, s. 6.5 — expiry for air
5. B — A toxic gas in Class 2.3
The 500 kg placarding exemption does not apply to Class 2.3 toxic gases, Class 4.3, goods needing an ERAP, most Class 1 and some Class 5.2, 6.1 and 7 goods.
Labels, placards and UN numbers · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 5 Dangerous goods marks, s. 4.16.1(2) — placarding exemption limits
6. A — The consignor
The consignor must determine the classification before allowing a carrier to take possession of the goods. Carriers rely on the consignor's classification and shipping document.
Classification, UN numbers and Schedule 1 · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 3 Classification, s. 2.2 — responsibility for classification
7. D — *666
Transport Canada lists CANUTEC at 1-888-CAN-UTEC (226-8832), 613-996-6666, or *666 from a cellphone. Call 911 for local emergency services as well.
TDG law, key terms and penalties · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 1 TDG law and key terms, Transport Canada — TDG in Canada (CANUTEC)
8. A — Class 9, because it is carried hot
A substance that meets no other class but is carried as a liquid at 100 °C or more (or a solid at 240 °C or more) falls in Class 9. Asphalt and tar are excluded from that rule.
The nine classes and their divisions · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 2 Classes and divisions, s. 2.43 — Class 9
9. B — UN number, shipping name, primary class, subsidiary class, packing group
The description follows a fixed order: UN number, shipping name, primary class, compatibility group (Class 1 only), subsidiary class in parentheses, and packing group.
Shipping documents · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 4 Documentation, s. 3.5(1)(c) — order of description
10. B — An approved ERAP is required
When goods with the same UN number in a single means of containment exceed the ERAP index in column 7, an approved ERAP is required. ERAP goods cannot use the DANGER placard or the 500 kg exemption.
Emergency response assistance plans (ERAP) · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 8 Emergency response assistance plans, s. 7.2(1)(a) — ERAP index
11. A — Part 6 training and Part 8 reporting still apply
Section 1.16 exempts the load from Parts 3 to 5 under conditions, but it does not exempt training (Part 6) or reporting (Part 8). Marks and a document are still required.
Exemptions and special cases · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 10 Special cases, s. 1.16 — 500 kg gross mass
12. D — The local authority that responds to emergencies there
The emergency report goes, as soon as possible, to the local authority responsible for responding to emergencies at the location, such as the local police or fire service through 911.
Reporting releases, loss and theft · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 9 Reporting, s. 8.2 — emergency report
13. D — To prevent damage that could lead to a release in normal transport
Goods must be loaded and secured so normal conditions of transport do not damage the container or the vehicle in a way that could cause a release.
Means of containment · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 6 Means of containment, s. 5.4 — loading and securing
14. D — Immediately
A trained person must show the certificate to an inspector immediately on request. The 15-day period applies to the employer's copies after a written request.
Training and the TDG certificate · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 7 Training, s. 6.8 — showing proof
15. B — No, loads of 500 kg gross or less are exempt from placards
No placard is required on a road or railway vehicle when the dangerous goods have a gross mass of 500 kg or less, with exceptions such as ERAP goods, Class 2.3 and Class 4.3.
Labels, placards and UN numbers · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 5 Dangerous goods marks, s. 4.16.1 — placarding exemption
16. A — The goods are not permitted as an excepted quantity
Column 6(b) gives the excepted quantity code; E0 means the goods cannot be shipped as an excepted quantity. E1 to E5 set the maximum amounts per inner and outer container.
Classification, UN numbers and Schedule 1 · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 3 Classification, Schedule 1 — column 6(b)
17. A — $50,000
On summary conviction, the maximum fine is $50,000 for a first offence and $100,000 for each later offence. On indictment, the maximum is two years in prison.
TDG law, key terms and penalties · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 1 TDG law and key terms, Act s. 33 — punishment
18. C — Class 4.3
Class 4.3, Water-reactive Substances, covers substances that emit flammable gas on contact with water. 4.1 is flammable solids, 4.2 is spontaneous combustion and 5.1 is oxidizers.
The nine classes and their divisions · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 2 Classes and divisions, s. 2.21 — Class 4 divisions
19. B — English or French
Shipping document information must be legible, in indelible print and in English or French. One official language is enough.
Shipping documents · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 4 Documentation, s. 3.4 — legibility and language
20. C — Certain higher-risk dangerous goods
Transport Canada explains that an ERAP describes what to do if certain higher-risk dangerous goods are released or might be released during transport, to help emergency responders.
Emergency response assistance plans (ERAP) · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 8 Emergency response assistance plans, Transport Canada — ERAP program
21. D — A square on point, black at top and bottom, white in the centre
The limited quantity mark is a square on point with black top and bottom portions and a white centre, at least 100 mm a side (50 mm if the box is small). The hatched E is the excepted quantities mark.
Exemptions and special cases · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 10 Special cases, s. 1.17(5) — limited quantity mark
22. A — 30 days
The person who made the release report, or that person's employer, must send a written follow-up report to the Minister within 30 days after the release report was made.
Reporting releases, loss and theft · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 9 Reporting, s. 8.6 — 30-day follow-up
23. A — It displays the UN packaging marks and meets the applicable standard
A UN standardized means of containment displays the applicable UN marks and meets the Canadian CGSB standard, or was built abroad under the UN Recommendations and that country's rules.
Means of containment · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 6 Means of containment, s. 5.6 — UN standardized means of containment
24. B — The employer
The employer issues the training certificate once it has reasonable grounds to believe the employee is adequately trained. A training provider's course record is not the certificate itself.
Training and the TDG certificate · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 7 Training, s. 6.3 — issuance
25. D — 100 mm
A label must be at least 100 mm on each side, with a line about 5 mm inside the edge. In some cases, such as on a cylinder shoulder, it may be reduced to no less than 30 mm.
Labels, placards and UN numbers · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 5 Dangerous goods marks, s. 4.7 — label size
26. A — The goods must not be imported, offered, handled or transported
"Forbidden" in column 3 means the dangerous goods must not be imported, offered for transport, handled or transported. A person can apply for an equivalency certificate under Part 14.
Classification, UN numbers and Schedule 1 · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 3 Classification, Schedule 1 — column 3
27. C — The cargo tank that forms part of a highway tank truck
A means of containment is any container or packaging, or any part of a means of transport, that is or can be used to hold goods. A cargo tank built into a truck is part of the means of transport used to hold goods.
TDG law, key terms and penalties · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 1 TDG law and key terms, Act s. 2 — means of containment
28. B — 5.1 is oxidizing substances; 5.2 is organic peroxides
Class 5.1 covers oxidizing substances that yield oxygen and feed combustion, and Class 5.2 covers organic peroxides. The other pairs describe Classes 4, 6 and 2.
The nine classes and their divisions · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 2 Classes and divisions, s. 2.24 — Class 5
29. A — Written permission from CANUTEC
The 24-hour number may be CANUTEC's only if the consignor has received written permission from CANUTEC. Other agencies may be used if they hold current information on the goods.
Shipping documents · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 4 Documentation, s. 3.5(2) — CANUTEC as 24-hour number
30. A — Gasoline in a tank car holding more than 10 000 L
Section 7.2(1)(f) requires an ERAP for listed flammable liquids, such as gasoline, diesel, crude oil and ethanol over 24%, in a tank car holding more than 10 000 L.
Emergency response assistance plans (ERAP) · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 8 Emergency response assistance plans, s. 7.2(1)(f) — rail tank cars
31. C — Those with 24% alcohol or less by volume
Alcoholic beverages containing 24% alcohol or less by volume are exempt from Parts 3 to 10 and 17, along with certain stronger drinks in small containers.
Exemptions and special cases · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 10 Special cases, s. 1.36 — alcoholic beverages
32. D — Any quantity
Releases of Class 1 explosives and Class 2 gases must be reported in any quantity. The 30 L or 30 kg threshold applies only to some PG III and Class 9 goods.
Reporting releases, loss and theft · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 9 Reporting, s. 8.2 — gases
33. C — CGSB-43.150 (or CGSB-43.146 for IBCs)
Small means of containment for Classes 3, 4, 5, 6.1, 8 and 9 are selected and used under CGSB-43.150 or, for IBCs, CGSB-43.146.
Means of containment · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 6 Means of containment, s. 5.12 — Classes 3, 4, 5, 6.1, 8 and 9
34. C — Yes, while it is valid in the United States
A training record issued to a US-licensed road driver under 49 CFR is a valid TDG training certificate in Canada while it is valid in the United States.
Training and the TDG certificate · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 7 Training, s. 6.4 — foreign carriers
35. D — Labels go on small containers; placards go on large ones
Labels are displayed on small means of containment and placards on large means of containment, such as trailers and tank cars. Both are required dangerous goods marks.
Labels, placards and UN numbers · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 5 Dangerous goods marks, ss. 4.7–4.8 — labels and placards
36. C — The limited quantity index
Column 6(a) is the explosive limit and limited quantity index, used with section 1.17. The ERAP index is column 7 and the packing group is column 4.
Classification, UN numbers and Schedule 1 · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 3 Classification, Schedule 1 — column 6(a)
37. C — Preparing the goods so a carrier can take possession of them
Offering for transport covers goods not yet in transport: choosing a carrier, preparing the goods for the carrier, or allowing the carrier to take them. Driving and unloading are transporting and handling.
TDG law, key terms and penalties · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 1 TDG law and key terms, Regs s. 1.4 — offer for transport
38. C — Gases known to be toxic or corrosive to humans
Class 2.3, Toxic Gases, covers gases known to be toxic or corrosive to humans, or with an LC50 of 5 000 mL/m³ or less. Ignition at 13% in air defines Class 2.1.
The nine classes and their divisions · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 2 Classes and divisions, s. 2.14 — Class 2.3
39. D — Listing the dangerous goods first under the heading "Dangerous Goods"
The dangerous goods must be shown first under the heading "Dangerous Goods", in a contrasting colour, or with an X in a "DG" column. Hiding them at the end or on the back is not allowed.
Shipping documents · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 4 Documentation, s. 3.4(2) — mixed documents
40. A — The ERAP reference number and telephone number
The shipping document must show the ERAP reference number issued by Transport Canada and the ERAP telephone number, each preceded or followed by the letters ERAP.
Emergency response assistance plans (ERAP) · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 8 Emergency response assistance plans, s. 3.5(1)(i) — ERAP on the shipping document
41. C — The 150 kg gross mass special case for consumer quantities
Section 1.15 covers goods in quantities sold to the general public, carried by the user or purchaser or by a retailer, in small, sound containers with a total gross mass of 150 kg or less.
Exemptions and special cases · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 10 Special cases, s. 1.15 — 150 kg gross mass
42. C — People were evacuated or sheltered in place
The release report is required if the release caused a death, an injury needing immediate medical treatment, an evacuation or shelter in place, or the closure of a facility, road, main rail line or waterway.
Reporting releases, loss and theft · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 9 Reporting, s. 8.4(2) — when a release report is needed
43. B — A mark required by a safety standard, showing the container meets it
Any mark required by a safety standard is a compliance mark, such as UN packaging codes. Compliance marks must be visible and legible; placards and labels are dangerous goods marks.
Means of containment · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 6 Means of containment, s. 5.3 — compliance marks
44. B — 36 months after it is issued
A training certificate for road, rail or vessel transport expires 36 months after issue. For air transport it expires after 24 months.
Training and the TDG certificate · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 7 Training, s. 6.5 — expiry
45. A — As a square set on one point, like a diamond
Labels and placards are squares displayed on point (diamond-shaped) when the container is upright, in the same orientation as the illustrations in the Regulations.
Labels, placards and UN numbers · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 5 Dangerous goods marks, ss. 4.7–4.8 — orientation
46. C — The letters UN followed by four digits
A UN number is the letters UN followed by four digits, such as UN1203 for gasoline. It identifies the substance in Schedule 1.
Classification, UN numbers and Schedule 1 · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 3 Classification, Schedule 1 — column 1
47. B — A person who has or will have possession of the goods while they are in transport
A carrier is anyone who has, or will have, possession of dangerous goods while they are in transport. The consignor signs the certification, the consignee receives the goods, and container makers are a separate role.
TDG law, key terms and penalties · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 1 TDG law and key terms, Regs s. 1.4 — carrier
48. B — Packing Group II
With a boiling point above 35 °C and a flash point below 23 °C, the liquid is in PG II. PG I is for boiling points of 35 °C or less, and there is no PG IV.
The nine classes and their divisions · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 2 Classes and divisions, s. 2.19 — Class 3 packing groups
49. A — Reach someone with technical information about the goods immediately
The 24-hour number must reach the consignor, or an approved agency, for immediate technical information about the goods, without breaking the caller's connection.
Shipping documents · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 4 Documentation, s. 3.5(1)(j) — 24-hour number
50. A — The Minister of Transport
The Minister approves an ERAP, for a specified period, when there are reasonable grounds to believe it can be implemented and will be effective.
Emergency response assistance plans (ERAP) · Based on: TDG Act and Regulations (current to 2026-09-30), Ch. 8 Emergency response assistance plans, Act s. 7(3) — approval

Original practice questions by Canada Exam Prep, written from the official handbook. Not official test questions. Free to print for personal study.

FAQ

TDG practice test (printable PDF): common questions

Is there an official TDG test in PDF with answers?

No. Transport Canada does not publish a TDG exam, because employers decide how to check training. The free official material is the TDG Act and Regulations on the Justice Laws website and Transport Canada's TDG pages; every question on this sheet is original and written from those sources.

Which version of the Regulations does this sheet follow?

The consolidation on Justice Laws current to September 30, 2026, which includes the 2026 amendments. If your course material uses older wording, such as safety marks instead of dangerous goods marks, the rule being tested is usually the same.

How do I save the questions as a PDF?

Press the print button and choose Save as PDF instead of a printer. Menus, buttons and ads are hidden when you print, and the answer key starts on a new page after question 50.

TDG practice test – printable questions and answers