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Hazardous Materials Free CDL Practice Tests
Page 14

Prepare For The Hazardous Materials Portion Of Your CDL Written Exams

Hazardous Materials Questions

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When dealing with a hazmat leak, which of the following applies?
  • Do not touch it
  • Do not eat or drink around it
  • Do not inhale it
  • All of these are good practices
Click here to look up the answer

From The CDL Manual

If you discover a cargo leak, identify the hazardous materials leaking by using shipping papers, labels or package location. Do not touch any leaking material — many people injure themselves by touching hazardous materials. Do not try to identify the material or find the source of a leak by smell. Many toxic gases destroy your sense of smell and can injure or kill you even if they do not smell. Never eat, drink or smoke around a leak or spill.

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If a hazmat load is leaking, you should still drive it:
  • Only into safety, if possible
  • To its destination
  • Into a lake
  • To your employers nearest terminal
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From The CDL Manual

If hazardous materials are spilling from your vehicle, do not move the vehicle any more than safety requires. You may move off the road and away from places where people gather, if doing so serves safety. Only move your vehicle if you can do so without danger to yourself or others.

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The cost of contamination cleanup from an in-transit, leaking hazmat load is the responsibility of:
  • The driver
  • The EPA
  • The shipper
  • The carrier
Click here to look up the answer

From The CDL Manual

Never continue driving with hazardous material leaking from your vehicle to find the nearest safe location where communication can be made. Remember that the carrier pays for the cleanup of contaminated parking lots, roadways and drainage ditches. The costs are enormous, so do not leave a lengthy trail of contamination.

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If you have to send someone for help for a hazmat leak, make sure that person has what information:
  • The exact location of the leaking vehicle
  • The shipping name, hazard class and ID number of the hazardous materials from the shipping paper
  • They should have all of this information, if at all possible
  • Your direction of travel
Click here to look up the answer

From The CDL Manual

When sending someone for help, give that person:

  • A description of the emergency.
  • Your exact location and direction of travel.
  • The shipping name, hazard class and ID number of the hazardous materials from the shipping paper.
  • Your name, the carrier’s name, and the name of the community or city where your terminal is located.
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The driver should try to contain, repair, and clean up leaks:
  • Before emergency personnel arrive
  • As soon as possible
  • Before calling their employer
  • Only if properly trained and equipped
Click here to look up the answer

From The CDL Manual

Never move your vehicle if doing so will cause contamination or damage the vehicle. Keep any fumes or product away from roadside rests, truckstops, cafes and businesses. Never try to repack leaking containers. Unless you have the training and equipment to repair leaks safely, do not try it. Call your dispatcher or supervisor for instructions and, if needed, emergency personnel.

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Before pulling apart vehicles in an accident involving Class 1 materials:
  • Remove all explosives
  • Call your insurance company
  • Take pictures
  • Put all explosives back on the vehicle
Click here to look up the answer

From The CDL Manual

Class 1 (explosives):

If your vehicle has a breakdown or accident while carrying explosives, warn others of the danger. Keep bystanders away. Do not allow smoking or open fire within 25 feet of the vehicle. If there is a fire, warn everyone of the danger of explosion.

Remove all explosives before pulling apart vehicles involved in a collision. Place the explosives at least 300 feet from the vehicles and occupied buildings. Keep others and yourself a safe distance away.

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In case of a flammable Class 2 (compressed gas) accident and/or leak, do all of the following except:
  • Transfer all remaining cargo into other tanks as soon as possible, regardless of where you're parked
  • Notify the shipper of an accident
  • Warn others of the danger
  • Permit only emergency or authorized personnel near the vehicle
Click here to look up the answer

From The CDL Manual

Class 2 (compressed gases):

If compressed gas is leaking from your vehicle, warn others of the danger. Only permit those involved in removing the hazard or wreckage to get close. You must notify the shipper if compressed gas is involved in any accident.

Unless you are fueling machinery used in road construction or maintenance, do not transfer a flammable compressed gas from one tank to another on any public roadway.

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Smoldering packages of flammable solids should be:
  • Removed from the vehicle, if possible
  • Removed from the vehicle, and then opened
  • Thrown as far as possible away from the vehicle
  • Opened immediately
Click here to look up the answer

From The CDL Manual

Class 4 (flammable solids) and Class 5 (oxidizing materials):

If a flammable solid or oxidizing material spills, warn others of the fire hazard. Do not open smoldering packages of flammable solids. Remove them from the vehicle if you can safely do so. Also, remove unbroken packages if it will decrease the fire hazard.

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A Class 6 material leak should in many cases be handled the same as:
  • A flammable materials leak
  • A corrosive leak
  • A compressed gas leak
  • A radioactive leak
Click here to look up the answer

From The CDL Manual

Class 6 (poisonous materials and infectious substances):

It is your job to protect yourself, other people and property from harm. Remember that many products classed as poison also are flammable. If you think a Division 2.3 (poisonous gases) or Division 6.1 (poisonous materials) might be flammable, take the added precautions needed for flammable liquids or gases. Do not allow smoking, open flame or welding. Warn others of the hazards of fire, inhaling vapors or coming in contact with the poison.

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The National Response Center must be called whenever which of the following occurs as a result of a hazmat incident or accident?
  • A main road is shut down for 2 hours
  • Spillage, breakage, or fire involving radioactive materials occurs
  • The NRC should be contacted immediately in any of these circumstances
  • Someone requires hospitalization due to injury
Click here to look up the answer

From The CDL Manual

9.7.5 – Required Notification

The National Response Center helps coordinate emergency response to chemical hazards. It is a resource to the police and firefighters. It maintains a 24-hour, toll-free line listed below. You or your employer must phone when any of the following occur as a direct result of a hazardous materials incident:

  • A person is killed.
  • An injured person requires hospitalization.
  • Estimated property damage exceeds $50,000.
  • The general public is evacuated for more than one hour.
  • One or more major transportation arteries or facilities are closed for one hour or more.
  • Fire, breakage, spillage or suspected radioactive contamination occurs.
  • Fire, breakage, spillage or suspected contamination occur involving shipment of etiologic agents (bacteria or toxins).
  • A situation exists of such a nature (e.g., continuing danger to life exists at the scene of an incident) that, in the judgment of the carrier, should be reported.
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A resource to local police and firefighters that serves to coordinate response to chemical hazards is the:
  • National Resource Center
  • National Response Coalition
  • Nerve-gas Response Center
  • National Response Center
Click here to look up the answer

From The CDL Manual

Required Notification —

The National Response Center helps coordinate emergency response to chemical hazards. It is a resource to the local police and firefighters. The center maintains a 24-hour, toll-free line.

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What class hazard is Asbestos?
  • 5
  • 9
  • 1
  • 7
Click here to look up the answer

From The CDL Manual

See "Hazard Class Definitions, Table B" in Hazmat section of CDL manual

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An example of a Class 5 hazard would be:
  • Dynamite
  • Propane
  • Charcoal
  • Hydrogen Peroxide
Click here to look up the answer

From The CDL Manual

See "Hazard Class Definitions, Table B" in Hazmat section of CDL manual

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Examples of shipping papers include all of the following except:
  • Manifests
  • Bills of lading
  • These are all valid examples of shipping papers
  • Shipping orders
Click here to look up the answer

From The CDL Manual

A shipping paper describes the hazardous materials being transported. Shipping orders, bills of lading and manifests are all shipping papers.

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DANGEROUS placards may be used in place of separate placards when you have not loaded 2,205 lbs or more of a table 2 material in one place, and:
  • You will only be traveling a short distance
  • You have 1,001 pounds or more of two or more Table 2 hazard classes, requiring different placards
  • You have 2,205 pounds or more of two or more Table 2 hazard classes, requiring different placards
  • The shipper has given you permission
Click here to look up the answer

From The CDL Manual

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.)
  • The dangerous placard is an option, not a requirement. You can always placard for the materials.
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What secondary hazard requires additional placarding regardless of amount carried?
  • Dangerous when wet
  • Cement
  • Dangerous when dry
  • Slippery substance
Click here to look up the answer

From The CDL Manual

Materials with a secondary hazard of dangerous when wet must display the DANGEROUS WHEN WET placard in addition to any other placards needed by the product’s hazard class. The 1,000- pound exception to placarding does not apply to these materials.

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A bulk package, requiring placards when transporting hazmat, is defined as single container with a capacity of:
  • 1,000 gallons or more
  • 119 gallons or more
  • 119 pounds or more
  • 1,000 lbs or more
Click here to look up the answer

From The CDL Manual

Bulk packaging is a single container with a capacity of 119 gallons or more. A bulk package, and a vehicle transporting a bulk package, must be placarded, even if it only has the residue of a hazardous material. Certain bulk packages only have to be placarded on the two opposite sides or may display labels. All other bulk packages must be placarded on all four sides.

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