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FL CDL Hazmat study materials
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FL CDL Hazmat practice questions

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Question 1Shipping Papers

Under federal hazmat rules, a driver operating a vehicle carrying a hazardous material that requires shipping papers must keep those papers where?

  1. Mailed to the consignee before departure
  2. In a pouch on the driver's door or in clear view within immediate reach while the seat belt is fastened Correct answer.
  3. Locked in the vehicle's cargo area with the placards
  4. Stored in the cab's glove box only when the vehicle is parked

Explanation

The hazardous materials regulations require shipping papers to be readily accessible to the driver during transport, and to a crew member or emergency responder entering the cab. The standard practice is a door pouch or a location in clear view within immediate reach while belted. Keeping them locked away defeats the purpose of immediate access.

Question 2Shipping Papers

A shipping paper describes a hazardous material. Which entry is required to appear on the paper so responders know the hazard?

  1. The driver's medical examiner certificate number
  2. The vehicle's annual inspection sticker number
  3. The basic description including the proper shipping name, hazard class, and UN identification number Correct answer.
  4. The consignee's telephone number and billing code

Explanation

The basic description on a shipping paper must include the proper shipping name, hazard class or division, and the identification number, in the required sequence. These elements tell emergency responders what the material is and how it behaves. Billing, medical, and inspection data are unrelated to hazard communication.

Question 3Shipping Papers

On a shipping paper, what does the UN identification number such as UN1203 identify?

  1. The weight of the shipment in kilograms
  2. The expiration date of the placards
  3. The route the vehicle must follow
  4. The specific hazardous material for emergency response purposes Correct answer.

Explanation

The UN identification number is a four-digit code assigned to a specific hazardous material or group of materials. Responders use it with the proper shipping name to identify the hazard. It carries no weight, routing, or date information.

Question 4Shipping Papers

A shipping paper entry shows the hazard class "3." What does that class indicate about the material?

  1. It is an oxidizing gas
  2. It is a corrosive solid
  3. It is a radioactive material
  4. It is a flammable or combustible liquid Correct answer.

Explanation

Hazard Class 3 covers flammable and combustible liquids, which are the most common hazmat shipments on highways. Corrosives fall under Class 8, radioactive materials under Class 7, and oxidizing gases under Class 2. Reading the class digit correctly is essential to recognizing the risk.

Question 5Shipping Papers

When a shipping paper contains both hazardous and non-hazardous materials, how must the hazardous material entries be presented?

  1. They may be mixed randomly with other entries
  2. They must be omitted to shorten the document
  3. They must be written only in pencil
  4. They must be distinguishable, such as by being listed first or highlighted in a contrasting way Correct answer.

Explanation

The regulations require hazardous material entries to be distinguishable from non-hazardous entries on a mixed shipping paper. Common methods include listing hazmat first, using a contrasting color, or highlighting. Random mixing or omission would hide the hazard from responders.

Question 6Shipping Papers

Who is responsible for providing the shipping paper that accompanies a hazardous materials shipment?

  1. The state weigh station inspector
  2. The receiver who unloads the material
  3. The shipper who offers the hazardous material for transport Correct answer.
  4. The mechanic who inspects the truck

Explanation

The offeror, meaning the shipper, must prepare and provide shipping documentation that accurately describes the hazardous material. The carrier and driver then ensure the papers stay with the shipment. Receivers, mechanics, and inspectors do not create the shipping paper.

Question 7Shipping Papers

A shipping paper lists an emergency response telephone number. What must be true of that number?

  1. It must be monitored at all times during transport by a person who can provide response information Correct answer.
  2. It may be an unmonitored voicemail box
  3. It may be a number that rings only during business hours
  4. It may be the driver's personal cell phone turned off during transit

Explanation

The emergency response telephone number on a shipping paper must be monitored at all times while the material is in transportation. The person answering must have access to response information or be able to reach someone who does. Unmonitored or limited-hours numbers do not satisfy this requirement.

Question 8Shipping Papers

During a roadside inspection, an officer asks to see the shipping papers for your hazmat load. What should you do?

  1. Refuse until the shipper authorizes release
  2. Hand the papers to the officer promptly, since they are required to be accessible Correct answer.
  3. Say the papers are sealed in the trailer
  4. Offer only the bill of lading without hazmat entries

Explanation

Shipping papers must be readily accessible so they can be produced for inspection by authorized officials. Refusing or claiming they are sealed away violates the accessibility rule. The papers describe the load and are not confidential from inspectors.

Question 9Shipping Papers

You are reviewing a shipping paper before departure and notice the hazard class is listed but the UN identification number is missing. What is the correct action?

  1. Proceed and note the omission at delivery
  2. Cover the class entry so the paper looks complete
  3. Do not accept the shipment until the shipper corrects the basic description Correct answer.
  4. Add the number yourself from memory

Explanation

A complete basic description requires the proper shipping name, hazard class, and identification number. The driver should not accept paperwork with a missing required element; the shipper must correct it. Guessing or altering entries creates false documentation.

Question 10Shipping Papers

A shipping paper shows the total quantity of a hazardous material as "1,000 lb." Why does this figure matter to the driver?

  1. Quantity thresholds determine placarding and some operational requirements Correct answer.
  2. It replaces the need for a proper shipping name
  3. It sets the speed limit for the trip
  4. It determines the driver's hours of service

Explanation

The quantity of hazardous material affects placarding decisions and certain regulatory thresholds, such as the 1,001-pound rule for Table 2 materials. It does not govern speed limits or hours of service. The proper shipping name is still required regardless of quantity.

Question 11Shipping Papers

A shipping paper uses an abbreviation for the proper shipping name that is not a recognized symbol or abbreviation. What is the problem?

  1. Proper shipping names must be used in full as listed, so unrecognized abbreviations are not acceptable Correct answer.
  2. The paper should use the driver's nickname for the material
  3. Only metric abbreviations are allowed
  4. Abbreviations are always preferred on shipping papers

Explanation

The proper shipping name must match the name listed for the material rather than an improvised abbreviation. Recognized symbols and certain authorized abbreviations are permitted, but invented shorthand can confuse responders. Clarity of the description is the governing principle.

Question 12Shipping Papers

You are hauling a load that requires placards. How do the shipping papers and the placards work together?

  1. The papers must be posted on the outside of the trailer
  2. The papers carry the detailed description while the placards warn others from outside the vehicle Correct answer.
  3. The placards replace the shipping papers entirely
  4. The placards must list the emergency phone number

Explanation

Placards provide an exterior warning of the hazard class, while shipping papers provide the detailed description responders need. They serve complementary roles and neither replaces the other. Papers stay accessible to the driver, not posted outside.

Question 13Shipping Papers

A driver is involved in a collision and must leave the vehicle. What should be done with the shipping papers?

  1. Mail them back to the shipper before leaving
  2. Burn them to prevent misuse
  3. Hide them under the seat
  4. Take them or leave them in the door pouch so responders can find them immediately Correct answer.

Explanation

Shipping papers should remain available to emergency responders at the scene. Leaving them in the customary accessible location, such as the door pouch, or handing them to responders supports a safe response. Destroying or concealing them endangers everyone.

Question 14Shipping Papers

A shipping paper entry reads "Gasoline, 3, UN1203, PG II." Which element tells responders the packing group?

  1. 3
  2. Gasoline
  3. UN1203
  4. PG II Correct answer.

Explanation

The packing group, shown as PG I, II, or III, indicates the degree of danger within a hazard class. In this entry "PG II" is that element. Gasoline is the proper shipping name, 3 is the hazard class, and UN1203 is the identification number.

Question 15Shipping Papers

Why must shipping papers for hazardous materials be kept in a location that emergency responders can reach even if the driver is incapacitated?

  1. The papers serve as the vehicle registration
  2. Responders are required to file the papers with the state
  3. The papers prove the driver paid taxes
  4. Responders need the description to identify the hazard and choose protective actions Correct answer.

Explanation

If the driver is injured or unconscious, responders must still learn what is on board. Accessible shipping papers let them identify the material and select appropriate protective measures. The papers are not tax, registration, or filing documents.

Question 16Shipping Papers

A shipper gives you a shipping paper for a corrosive liquid but the hazard class shown is 8 and the material is also marked as a marine pollutant. What does the marine pollutant notation add?

  1. It changes the hazard class to a gas
  2. It signals an additional environmental hazard that responders should consider Correct answer.
  3. It means the load no longer needs placards
  4. It removes the need for an emergency phone number

Explanation

A marine pollutant notation identifies an environmental hazard in addition to the primary hazard class. Responders use it to plan containment and prevent water contamination. It does not change the hazard class, eliminate placards, or waive the emergency contact requirement.

Question 17Shipping Papers

You notice the shipping paper lists a proper shipping name that does not match the placards on the trailer. What should you do before moving the vehicle?

  1. Assume the paper is correct and remove the placards
  2. Assume the placards are correct and ignore the paper
  3. Drive anyway and report it after delivery
  4. Resolve the discrepancy with the shipper so papers and placards agree Correct answer.

Explanation

Shipping papers and placards must describe the same material and hazard. A mismatch means one of them is wrong, and moving the vehicle with conflicting information endangers responders. The shipper must correct the documentation before transport.

Question 18Shipping Papers

Which statement best describes the role of the emergency response information that must accompany a hazmat shipping paper?

  1. It lists the shipper's profit margin
  2. It gives responders specific guidance for the material, such as first aid and firefighting measures Correct answer.
  3. It serves as the driver's logbook
  4. It replaces the vehicle's insurance certificate

Explanation

Emergency response information provides material-specific guidance for incidents, including health hazards, firefighting, and spill response. It must accompany the shipment when required. It has nothing to do with finances, logbooks, or insurance.

Question 19Shipping Papers

A driver is hauling a hazardous material and must leave the vehicle unattended briefly at a terminal. What is the correct practice for the shipping papers?

  1. Leave them with the gate guard
  2. Lock them in the terminal office safe
  3. Place them in the trailer with the cargo
  4. Keep them in the required accessible location in the vehicle Correct answer.

Explanation

Shipping papers must remain with the shipment in the required accessible location even during brief stops. Removing them to an office or guard station separates the documentation from the hazard. Storage in the cargo area is not accessible to responders.

Question 20Shipping Papers

A shipping paper shows "RQ" next to a material name. What does this notation indicate?

  1. The shipment contains a quantity of a hazardous substance that meets the reportable quantity threshold Correct answer.
  2. The driver must take a rest break
  3. The material is exempt from all hazmat rules
  4. The load is destined for a foreign country

Explanation

The letters RQ mark a hazardous substance shipped in a quantity equal to or greater than its reportable quantity. This triggers additional notification and documentation duties. RQ does not exempt the load, schedule breaks, or indicate export.

Question 21Shipping Papers

You are comparing two shipping papers for the same product. One lists the proper shipping name in full and one uses an authorized abbreviation. Which is acceptable?

  1. Only the full name is ever acceptable
  2. Neither is acceptable without a notary stamp
  3. Only the abbreviation is acceptable
  4. Both are acceptable if the abbreviation is one the regulations recognize for that name Correct answer.

Explanation

The regulations permit certain recognized abbreviations and symbols in place of the full proper shipping name. Both forms are acceptable when the abbreviation is authorized. Invented shorthand, however, is not permitted, and no notary is involved.

Question 22Shipping Papers

A mixed load includes a Table 2 hazardous material at 1,100 pounds and another Table 2 material at 900 pounds. How does the 1,001-pound placarding threshold apply?

  1. Only the largest single quantity is considered
  2. Each material is counted separately and never combined
  3. The 1,001-pound rule is applied to the aggregate quantity of Table 2 materials in the same hazard class Correct answer.
  4. The threshold applies only to Table 1 materials

Explanation

For Table 2 materials, placards are required when the aggregate quantity of materials in the same hazard class reaches 1,001 pounds or more. Aggregating the two quantities in this example exceeds the threshold. Table 1 materials have different, more stringent placarding rules.

Question 23Shipping Papers

A shipping paper for a hazardous waste shipment must include which additional element beyond the standard basic description?

  1. The vehicle's tire size
  2. The word "Waste" preceding the proper shipping name Correct answer.
  3. The consignee's bank account number
  4. The driver's home address

Explanation

Hazardous waste shipments require the word "Waste" to precede the proper shipping name so handlers recognize the material's regulatory status. This marking supports tracking and disposal requirements. Personal, vehicle, and financial details are not part of the description.

Question 24Shipping Papers

A responder at a crash scene finds the shipping paper but the emergency response telephone number is a general company switchboard that closes at 5 p.m. What is the regulatory defect?

  1. The number must be a toll-free 800 number
  2. The number must belong to the driver
  3. The number must be monitored at all times during transport, so a business-hours switchboard does not comply Correct answer.
  4. The number must be printed in red ink

Explanation

The emergency response telephone number must be monitored continuously while the material is in transportation. A switchboard that closes at 5 p.m. cannot provide response information overnight. Toll-free status, ownership, and ink color are not the governing requirements.

Question 25Shipping Papers

During a pre-trip review, you find that the shipping paper's basic description sequence is proper shipping name, UN number, hazard class, packing group. What is wrong with this sequence?

  1. The required order places the identification number after the hazard class, not before it Correct answer.
  2. Nothing is wrong; any order is acceptable
  3. The packing group must come first
  4. The proper shipping name must come last

Explanation

The basic description must follow the prescribed sequence: proper shipping name, hazard class or division, and identification number, with the packing group as applicable. Placing the UN number before the hazard class departs from that order. Consistency in sequence helps responders read papers quickly.

Question 26Shipping Papers

Under the Federal Motor Carrier Safety Regulations, a driver hauling a hazardous material must keep the shipping paper in which location while operating the vehicle?

  1. Mailed to the consignee ahead of the trip
  2. Stored in the cab's glove box out of view
  3. In a pouch on the driver's door or in clear view within reach of the driver Correct answer.
  4. Locked in the trailer with the cargo

Explanation

The hazardous materials regulations require the shipping paper to be kept in a location that is within the driver's immediate reach, such as a door pouch or in clear view, so it can be produced for inspection or handed to responders. It must remain accessible during the entire trip, not stored away.

Question 27Shipping Papers

A shipping paper lists the basic description for a hazardous material. Which element appears first in the required basic description sequence?

  1. The total quantity
  2. The proper shipping name Correct answer.
  3. The hazard class number
  4. The UN identification number

Explanation

The basic description must begin with the proper shipping name, followed by the hazard class, the UN identification number, and the packing group when applicable. Quantity and other notations come after the basic description.

Question 28Shipping Papers

How many total hazardous material entries must appear on a shipping paper that carries two different hazardous materials?

  1. Only the entry for the material with the highest hazard class
  2. One combined entry listing both materials under a single name
  3. No entries are needed if the materials are in the same trailer
  4. One entry for each distinct hazardous material Correct answer.

Explanation

Each hazardous material in a shipment requires its own basic description entry on the shipping paper, so a load with two different materials needs two entries. Combining different materials under one name misrepresents the shipment.

Question 29Shipping Papers

A shipping paper must include emergency response information. Which source is acceptable for meeting that requirement?

  1. A note that responders should call the carrier's dispatcher
  2. A verbal briefing from the shipper at pickup
  3. Emergency response information printed on or attached to the shipping paper itself Correct answer.
  4. A generic safety poster kept at the terminal

Explanation

Emergency response information must accompany the shipping paper, either printed on it or attached as a separate document such as an emergency response guide page. It must be available to responders at the scene.

Question 30Shipping Papers

A shipping paper entry reads "UN1263, Paint, 3, PG II." What is wrong with the order of this basic description?

  1. The hazard class must appear last
  2. Nothing is wrong; any order is acceptable
  3. The packing group must come before the hazard class
  4. The proper shipping name must come before the UN identification number Correct answer.

Explanation

The required basic description sequence is proper shipping name, hazard class, UN identification number, and packing group. Placing the UN number first is out of sequence and could confuse responders reading the entry.

Question 31Shipping Papers

A shipping paper shows a hazardous material's total quantity as 1,100 pounds. Why does this figure matter for placarding decisions?

  1. It controls the vehicle's weight rating
  2. It determines the required tire pressure
  3. It sets the maximum legal payload for the trailer
  4. It determines whether the 1,001-pound placarding threshold for Table 2 materials is exceeded Correct answer.

Explanation

For Table 2 materials, placards are required when the aggregate quantity of all Table 2 materials in the vehicle reaches 1,001 pounds or more. The quantity listed on the shipping paper is the figure used to make that determination.

Question 32Shipping Papers

You are preparing to leave a shipper's dock. Which document must travel with the vehicle for a hazardous materials load?

  1. The bill of lading only if the load is over 1,000 pounds
  2. The shipping paper for the hazardous materials on board Correct answer.
  3. The consignee's receiving schedule
  4. The shipper's internal inventory sheet

Explanation

A shipping paper describing the hazardous materials must accompany the shipment at all times while in transit. It is required regardless of the load's weight or the shipper's internal paperwork.

Question 33Shipping Papers

A shipping paper lists a material with the notation "RQ" next to the proper shipping name. How should the driver use this information?

  1. Assume the shipment is exempt from placarding
  2. Treat the notation as a routing code
  3. Recognize that the material meets the reportable quantity threshold under environmental law Correct answer.
  4. Ignore it because it applies only to the shipper

Explanation

The RQ notation signals that the material meets the reportable quantity threshold under environmental law, which carries reporting obligations for spills. The driver should recognize this notation when interpreting the shipping paper.

Question 34Shipping Papers

A shipping paper for hazardous waste must include which element beyond the standard basic description?

  1. The consignee's phone number
  2. The driver's home address
  3. The word "Waste" before the proper shipping name Correct answer.
  4. The vehicle's license plate number

Explanation

Hazardous waste shipments must show the word "Waste" preceding the proper shipping name on the shipping paper. This alerts handlers and responders that the material is a regulated waste.

Question 35Shipping Papers

A shipping paper uses a recognized abbreviation for a proper shipping name. What standard governs whether an abbreviation is acceptable?

  1. Only abbreviations listed in the Hazardous Materials Table or recognized symbols are permitted Correct answer.
  2. Abbreviations are permitted only on the bill of lading
  3. Abbreviations are never permitted on shipping papers
  4. Any abbreviation the shipper invents is acceptable if it is explained

Explanation

The regulations permit only recognized abbreviations and symbols, such as those in the Hazardous Materials Table, for proper shipping names. Invented abbreviations are not acceptable.

Question 36Shipping Papers

You are hauling a material that requires placards. How do the placards relate to the shipping paper?

  1. The placards must match the hazard class shown on the shipping paper for that material Correct answer.
  2. The placards are required only when the shipping paper is missing
  3. The placards may show any hazard class the driver chooses
  4. The placards replace the need for a shipping paper

Explanation

Placards communicate the hazard class of the material to responders and must correspond to the hazard information on the shipping paper. A mismatch between placards and papers signals an error that should be corrected before departure.

Question 37Shipping Papers

A driver must leave the vehicle after a collision. What should be done with the shipping papers?

  1. Leave them in the vehicle in a location responders can reach, or give them to responders Correct answer.
  2. Destroy them to prevent disclosure
  3. Mail them to the shipper
  4. Take them home for safekeeping

Explanation

After a crash the shipping papers must remain available to emergency responders, either left in an accessible location in the vehicle or handed directly to responders. Removing or destroying them deprives responders of critical hazard information.

Question 38Shipping Papers

A shipping paper lists a proper shipping name that differs from the name on the placard applied to the trailer. What is the appropriate action?

  1. Resolve the discrepancy with the shipper before the vehicle departs Correct answer.
  2. Remove the placard and continue the trip
  3. Proceed because the placard controls in all cases
  4. Proceed because the shipping paper controls in all cases

Explanation

Placards and shipping papers must be consistent because both convey hazard information to responders. A discrepancy should be corrected with the shipper before departure rather than resolved by choosing one document over the other.

Question 39Shipping Papers

A responder at a crash scene finds the shipping paper but the emergency response telephone number is a general company switchboard that is closed. Why is this a problem under the hazmat rules?

  1. The number is required only for waste shipments
  2. Any number is acceptable as long as it is printed on the paper
  3. The number may be omitted if placards are displayed
  4. The number must be monitored at all times during transport or be a number that provides emergency response information Correct answer.

Explanation

The emergency response telephone number on a shipping paper must be monitored at all times the material is in transport, or it must be a number that can provide emergency response information. A closed switchboard fails that requirement.

Question 40Shipping Papers

A shipping paper for a mixed load shows one Table 2 material at 600 pounds and another Table 2 material at 500 pounds. How does the driver determine placarding for Table 2 materials?

  1. Compare each material separately to the 1,001-pound threshold
  2. Placard only the material with the larger quantity
  3. Placard only if a single material exceeds 1,001 pounds
  4. Add the quantities together and compare the total to the 1,001-pound threshold Correct answer.

Explanation

For Table 2 materials, the aggregate quantity of all such materials in the vehicle is compared to the 1,001-pound threshold. Here the combined 1,100 pounds exceeds the threshold, so placards are required.

Question 41Marking

Under the Florida CDL hazardous materials rules, which placard is required on a vehicle carrying a bulk package of a material classed as Division 6.1, PG I, inhalation hazard?

  1. Only the POISON INHALATION HAZARD placard
  2. No placard if the package weighs under 1,001 pounds
  3. Only the Division 6.1 POISON placard
  4. POISON INHALATION HAZARD placard plus the Division 6.1 POISON placard Correct answer.

Explanation

Materials meeting the inhalation hazard criteria for Division 6.1 PG I must display the POISON INHALATION HAZARD placard, and the hazard class placard for Division 6.1 is also required. The two placards are displayed together, not substituted for each other.

Question 42Marking

A vehicle carries 2,500 pounds of a Table 2 material in non-bulk packages. What placarding is required?

  1. Placards on all four sides regardless of quantity
  2. A DANGEROUS placard only
  3. No placard, because Table 2 materials are exempt
  4. The placard for the material's hazard class Correct answer.

Explanation

Table 2 materials require placards once the aggregate gross weight of all hazardous materials in that class reaches 1,001 pounds. At 2,500 pounds the class placard must be displayed.

Question 43Marking

Which statement describes the correct placement of placards on a cargo tank vehicle?

  1. Placards on the driver and passenger doors
  2. One placard on the front and one on the rear
  3. Placards on both sides and both ends of the vehicle Correct answer.
  4. One placard on the rear only

Explanation

Placards must be displayed on both sides and both ends of a placarded vehicle so the hazard is visible from any approach. Door placement is used for some other markings, not placards.

Question 44Marking

A driver is hauling a single bulk package of a Table 1 material. When must the placard be displayed?

  1. Any time the bulk package is loaded, regardless of weight Correct answer.
  2. Only when the total weight reaches 1,001 pounds
  3. Only when the material is also a hazardous waste
  4. Only when the vehicle crosses state lines

Explanation

Table 1 materials require placarding whenever they are loaded in bulk, no matter how little the package weighs. The 1,001-pound threshold applies to non-bulk quantities and to Table 2 materials.

Question 45Marking

What is the minimum size of a hazard class placard used on a Florida CDL vehicle?

  1. 12 inches by 12 inches
  2. 6 inches by 6 inches
  3. 10 3/4 inches by 10 3/4 inches Correct answer.
  4. 18 inches by 18 inches

Explanation

Standard placards measure 10 3/4 inches on each side and are diamond shaped. Smaller versions exist only for limited uses such as certain rail and small-vehicle applications.

Question 46Marking

A vehicle is carrying 1,200 pounds of a Table 2 flammable liquid and 500 pounds of a Table 2 corrosive. Which placards must be displayed?

  1. FLAMMABLE and CORROSIVE
  2. FLAMMABLE only Correct answer.
  3. DANGEROUS only
  4. CORROSIVE only

Explanation

The 1,001-pound threshold is applied per hazard class. The flammable liquid alone exceeds it, so that placard is required, while the corrosive load stays below the threshold and needs no placard.

Question 47Marking

Which placard is used for a material that meets the definition of a hazardous substance but fits no hazard class?

  1. CLASS 9
  2. NON-FLAMMABLE GAS
  3. DANGEROUS Correct answer.
  4. RESERVED

Explanation

The DANGEROUS placard covers hazardous substances and hazardous wastes that do not fall within a defined hazard class. It is not a substitute for a class placard when a class applies.

Question 48Marking

How must a placard be attached so that it reads correctly?

  1. Rotated 45 degrees so the text runs diagonally
  2. Upside down so the text faces the rear
  3. Either orientation, since both are accepted
  4. Square, with the text level and the diamond points up, down, left, and right Correct answer.

Explanation

Placards are diamonds displayed with one point up, one down, and one to each side, and the words must be readable at that orientation. Rotating the diamond so the text runs diagonally is incorrect.

Question 49Marking

A driver picks up a load of hazardous waste that is classed as a flammable liquid. Which placard combination is required?

  1. HAZARDOUS WASTE only
  2. FLAMMABLE plus HAZARDOUS WASTE Correct answer.
  3. FLAMMABLE plus DANGEROUS
  4. FLAMMABLE only

Explanation

Hazardous waste shipments require the HAZARDOUS WASTE placard in addition to the placard for the material's hazard class. The class placard is not dropped when the waste placard is added.

Question 50Marking

What does a white square-on-point marking on a motor vehicle indicate?

  1. The vehicle contains a hazardous material in a quantity requiring placarding Correct answer.
  2. The vehicle is exempt from placarding
  3. The vehicle is empty of hazardous materials
  4. The vehicle carries only non-regulated cargo

Explanation

A white square-on-point marking signals that the vehicle contains a hazardous material and is equivalent to a placard for enforcement purposes. It is not a symbol for an empty or exempt vehicle.