Oregon HazMat Test (OR) 2026

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80% Passing score
20 Questions
4 Mistakes allowed
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Sample Oregon HazMat Test Questions

Question 1

What is the primary reason shippers place hazardous materials in approved packaging?

  1. A To identify the driver transporting the load
  2. B To contain the material safely
  3. C To eliminate the need for shipping papers
  4. D To make every shipment easier to unload

Correct answer: B – To contain the material safely

Oregon’s CDL manual describes safe packaging requirements as containment rules. Their purpose is to keep hazardous materials contained and protect drivers, other people, and the environment from exposure. Hazard labels, shipping papers, emergency information, and placards perform the separate function of communicating the material’s risks.

Source: Oregon Commercial Driver Manual — § 9.1.1, “Contain the Material”; § 9.1.2, “Communicate the Risk”

Question 2

Which information is needed to determine what hazardous-material placards, if any, must be displayed?

  1. A The shipment’s destination, route, and delivery time
  2. B The material’s hazard class, the amount shipped, and the total weight of all hazardous-material classes aboard
  3. C The package color, weather forecast, and fire-extinguisher rating
  4. D The vehicle’s weight rating, the driver’s experience, and the trip length

Correct answer: B – The material’s hazard class, the amount shipped, and the total weight of all hazardous-material classes aboard

Oregon’s CDL manual identifies three necessary facts: the materials’ hazard classes, the amount of hazardous materials shipped, and the total weight of all hazardous-material classes on the vehicle. These facts are used to determine whether placards are required and which placards apply. Weather, route length, and driver experience are not part of this determination.

Source: Oregon Commercial Driver Manual — § 9.3.10, “Placarding”

Question 3

A vehicle is offered 20 pounds of Division 2.3, Hazard Zone A gas and 1,001 pounds of Division 2.1 flammable gas. With no applicable exception, what should you do?

  1. A Display POISON GAS and FLAMMABLE GAS placards
  2. B Display a DANGEROUS placard only
  3. C Separate the packages with other cargo
  4. D Do not load the materials together

Correct answer: D – Do not load the materials together

Federal segregation rules generally prohibit Division 2.3, Hazard Zone A gas and Division 2.1 flammable gas from being transported in the same vehicle. A narrow exception applies only when detailed packaging, separation, and carrier requirements are satisfied. Because the question states that no exception applies, the load must be rejected; placards cannot make a prohibited combination acceptable.

Source: 49 CFR § 177.848(d)–(e) — Segregation of hazardous materials., 49 CFR § 177.840(a)(3) — Class 2 (gases) materials.

Question 4

Which material may not be described on a shipping paper with a hazard class or hazardous-material identification number?

  1. A A regulated hazardous material in a reportable quantity
  2. B A regulated hazardous material below its reportable quantity
  3. C A hazardous waste
  4. D A non-hazardous material

Correct answer: D – A non-hazardous material

A non-hazardous material may not be described with a hazard class or hazardous-material identification number. Those entries could falsely identify ordinary cargo as regulated hazardous material. The Oregon manual includes this rule in its shipping-paper guidance, while federal regulations establish the restriction for hazardous-material descriptions.

Source: Oregon Commercial Driver Manual — § 9.3.5, “The Item Description”, 49 CFR § 172.202(e) — Description of hazardous material on shipping papers.

Question 5

When a highway carrier accepts hazardous waste requiring a manifest, what must the carrier’s representative do?

  1. A Sign and date the manifest and carry the required copy as a shipping paper
  2. B Sign the manifest only after the waste reaches its destination
  3. C Replace the manifest with an ordinary bill of lading
  4. D Carry a manifest only if waste is spilled

Correct answer: A – Sign and date the manifest and carry the required copy as a shipping paper

Federal rules require the initial and each subsequent carrier to sign and date the hazardous waste manifest when accepting the shipment. A required copy must be carried during transportation in the same manner as a shipping paper and retained for three years. A compliant electronic manifest and electronic signature may satisfy these requirements under the authorized electronic-manifest system.

Source: Oregon Commercial Driver Manual — § 9.3.9, “Hazardous Waste Manifest”, 49 CFR § 172.205(c)–(e), (j) — Hazardous waste manifest.

Question 6

Battery acid is offered for loading while dry silver cyanide is already aboard. If mixing them could generate hydrogen cyanide, what must you do?

  1. A Keep every battery-acid package upright
  2. B Place the battery acid above the silver cyanide
  3. C Separate the materials with a cargo cover
  4. D Do not transport the materials together

Correct answer: D – Do not transport the materials together

Federal segregation rules prohibit transporting cyanides with acids when mixing the materials would generate hydrogen cyanide. Keeping packages upright, changing their stacking order, or covering one product does not satisfy that prohibition. If battery acid and silver cyanide could react in this way, they cannot be accepted as a combined load.

Source: Oregon Commercial Driver Manual — § 9.4, “Loading and Unloading”, 49 CFR § 177.848(c) — Segregation of hazardous materials.

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