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Hazardous Materials Free CDL Practice Tests
Page 8

Prepare For The Hazardous Materials Portion Of Your CDL Written Exams

Hazardous Materials Questions

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Loads containing material from Placard Table 1 must be placarded:
  • When the driver feels it is dangerous
  • When more than 1,001 lbs is carried
  • When more than 2,205 lbs is carried
  • When any amount is carries
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From The CDL Manual

Placard Tables—

All products that meet the definition of hazardous materials must be placarded at some point. There are two placard tables (see page 95). Table 1 materials must be placarded when any amount is transported.

Except for bulk packagings, the hazard classes in Table 2 are required to be placarded only if the total amount transported is 1,001 pounds or more, including the package. Add the amounts from all shipping papers for all Table 2 products on board.

You may use DANGEROUS placards instead of separate placards for each Table 2 hazard class when:

You have 1,001 pounds or more of two or more Table 2 hazard classes, requiring different placards, and You have not loaded 2,205 pounds or more of any Table 2 hazard class material at any one place. (You must use the specific placard for this material.)

You have 1,001 pounds or more of two or more Table 2 hazard classes, requiring different placards, and You have not loaded 2,205 pounds or more of any Table 2 hazard class material at any one place. (You must use the specific placard for this material.)

Next
You must placard a shipment containing class 4.1 Flammable Solid when:
  • The shipment weighs over 2,205 lbs
  • You are carrying 1,001 lbs or more
  • The shipper deems it appropriate
  • You are carrying any amount
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From The CDL Manual

Also see Placard Table 2 - Page 95

Placard Tables—

All products that meet the definition of hazardous materials must be placarded at some point. There are two placard tables (see page 95). Table 1 materials must be placarded when any amount is transported.

Except for bulk packagings, the hazard classes in Table 2 are required to be placarded only if the total amount transported is 1,001 pounds or more, including the package. Add the amounts from all shipping papers for all Table 2 products on board.

You may use DANGEROUS placards instead of separate placards for each Table 2 hazard class when:

You have 1,001 pounds or more of two or more Table 2 hazard classes, requiring different placards, and You have not loaded 2,205 pounds or more of any Table 2 hazard class material at any one place. (You must use the specific placard for this material.)

You have 1,001 pounds or more of two or more Table 2 hazard classes, requiring different placards, and You have not loaded 2,205 pounds or more of any Table 2 hazard class material at any one place. (You must use the specific placard for this material.)

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Next
You must use additional placards when what words appear on the package or shipping paper?
  • INHALATION HAZARD
  • POISON INHALATION HAZARD
  • POISON GAS
  • USE ADDITIONAL PLACARDS
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From The CDL Manual

If the words INHALATION HAZARD are on the shipping paper or package, you must display POISON INHALATION HAZARD or POISON GAS placards as appropriate, in addition to any other placards needed by the product’s hazard class.

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Next
When should you transport leaking containers?
  • If it's not flammable
  • Never
  • It's fine if the leak is small
  • When your dispatcher tells you to
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From The CDL Manual

Watch for signs of leaking or damaged containers: LEAKS SPELL TROUBLE! Do not transport leaking packages. Depending on the material, you, your truck and others could be in danger.

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Next
Which of the following is true when loading or unloading hazmat?
  • It is sometimes OK to transport leaking packages
  • It is generally OK to load hazardous materials near heat sources
  • You should always set the parking brake
  • Hooks can be used if necessary
Click here to look up the answer

From The CDL Manual

General Loading Requirements—

Do all you can to protect containers of hazardous materials. Do not use any tools that might damage containers or other packaging during loading. Do not use hooks.

  • Before loading or unloading, set the parking brake. Make sure the vehicle will not move.
  • Many products become more hazardous when exposed to heat. Load hazardous materials away from heat sources.
  • Watch for signs of leaking or damaged containers: LEAKS SPELL TROUBLE! Do not transport leaking packages. Depending on the material, you, your truck and others could be in danger.
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Next
Packages containing hazardous material must be:
  • Loaded loose on the floor of the trailer
  • Opened and inspected
  • Allowed to move freely
  • Secured against movement while transporting
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From The CDL Manual

Secure Against Movement:

Brace containers so they will not fall, slide or bounce around during transportation. Be very careful when loading containers that have valves or other fittings. All hazardous materials packages must be secured during transportation.

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After loading, you should never transfer hazardous materials from one package to another, nor should you:
  • Move any packages for any reason
  • Empty a cargo tank
  • Travel over 50 mph
  • Open any packages
Click here to look up the answer

From The CDL Manual

Packages secured in a vehicle:

Any package containing any hazardous material, not permanently attached to a motor vehicle, must be secured against movement, including relative motion between packages, within the vehicle on which it is being transported, under conditions normally incident to transportation. Packages having valves or other fittings must be loaded in a manner to minimize the likelihood of damage during transportation.

After loading, do not open any package during your trip. Never transfer hazardous materials from one package to another while in transit. You may empty a cargo tank, but do not empty any other package while it is on the vehicle.

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Next
It is especially important that nobody smoke near what class of hazard?
  • Oxidizers
  • Flammable gas
  • Smoking is not permitted near any of these
  • Flammable liquids
Click here to look up the answer

From The CDL Manual

No smoking:

When loading or unloading hazardous materials, keep fire away. Do not let people smoke nearby. Never smoke around:

  • Class 1- Explosives
  • Division 2.1 - Flammable Gas
  • Class 3 - Flammable liquids
  • Class 4 - Flammable Solids
  • Class 5 - Oxidizers
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Next
Cargo heaters are generally prohibited in cargo space that contains any of the following except:
  • Division 2.1 - Flammable Gas
  • Division 5.1 - Oxidizer
  • Class 1 - Explosives
  • Class 3 - Flammable Liquids
Click here to look up the answer

From The CDL Manual

Cargo heater rules:

There are special cargo heater rules for loading:

  • Class 1- Explosives
  • Division 2.1 - Flammable Gas
  • Class 3 - Flammable liquids

The rules usually forbid the use of cargo heaters, including automatic cargo heater/air conditioner units. Unless you have read all the related rules, do not load the above products in a cargo space that has a heater.

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Next
Class 1, 4 and 5 hazards must be loaded into a closed cargo space unless the packages are fire and water resistant, or:
  • Are packaged in small containers
  • Are covered with a water and fire resistant tarp
  • Cannot reasonably fit into the space
  • Need to be delivered quickly
Click here to look up the answer

From The CDL Manual

Use closed cargo space:

You cannot have overhang or tailgate loads of:

  • Class 1- Explosives
  • Class 4 - Flammable Solids
  • Class 5 - Oxidizers

You must load these hazardous materials into a closed cargo space unless all packages are:

Fire and water resistant, or

Covered with a fire and water resistant tarp.

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