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Hazardous Materials Free CDL Practice Tests
Page 11

Prepare For The Hazardous Materials Portion Of Your CDL Written Exams

Hazardous Materials Questions

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Good Luck!

Before moving tanks of hazardous materials, all valves and manhole covers must be:
  • Closed
  • Opened
  • Half-closed
  • Labeled
Click here to look up the answer

From The CDL Manual

All manholes and valves must be closed before moving a tank of hazardous materials, no matter how small the amount in the tank or how short the distance. Manholes and valves must be closed to prevent leaks.

Next
When loading or unloading flammable liquids, all of the following are true except:
  • The must be grounded until after closing the filling hole
  • Turn the engine off unless operating a pump
  • Keep the engine running at all times
  • The tank must be grounded before opening
Click here to look up the answer

From The CDL Manual

Flammable Liquids —

Turn off your engine before loading or unloading any flammable liquids. Only run the engine if needed to operate a pump. Ground a cargo tank correctly before filling it through an open filling hole. Ground the tank before opening the filling hole, and maintain the ground until after closing the filling hole.

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When loading or unloading compressed gas:
  • Before unhooking hose, turn engine off
  • Trailer wheels should be chocked
  • Engine should turned off unless running a pump
  • You should do all of these things
Click here to look up the answer

From The CDL Manual

Compressed Gas —

Keep liquid discharge valves on a compressed gas tank closed except when loading and unloading. Unless your engine runs a pump for product transfer, turn it off when loading or unloading. If you use the engine, turn it off after product transfer before unhooking the hose.

Unhook all loading/unloading connections before coupling, uncoupling or moving a chlorine cargo tank. Always chock trailers and semitrailers to prevent motion when uncoupled from the power unit.

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When parking hazmat Division 1.1, 1.2, or 1.3 loads, do not park within _______ of bridges, fires, or gathering places?
  • 300 yards
  • 300 feet
  • 1/2 mile
  • 100 feet
Click here to look up the answer

From The CDL Manual

Never park with Division 1.1, 1.2 or 1.3 (Class A or B) explosives within 5 feet of the traveled part of the road. Except for short periods of time needed for vehicle operation necessities (e.g. fueling), do not park within 300 feet of:

  • a bridge, tunnel or building;
  • a place where people gather; or
  • an open fire.
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Never park Division 1.1, 1.2, or 1.3 explosives within 5 feet of:
  • The traveled part of the road
  • A group of trees
  • Other vehicles
  • A pond
Click here to look up the answer

From The CDL Manual

Never park with Division 1.1, 1.2 or 1.3 (Class A or B) explosives within 5 feet of the traveled part of the road. Except for short periods of time needed for vehicle operation necessities (e.g. fueling), do not park within 300 feet of:

  • a bridge, tunnel or building;
  • a place where people gather; or
  • an open fire.
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When parking loads of Division 1.1, 1.2, or 1.3 explosives, you may only leave your vehicle unattended when parked:
  • On the shipper's property
  • On the carrier's property
  • In a safe haven
  • Inside city limits
Click here to look up the answer

From The CDL Manual

You may leave your vehicle unattended in a safe haven, an approved place for parking unattended vehicles loaded with explosives. Local authorities usually make the designation of authorized safe havens.

When parking in a safe haven, the driver must make sure the owners of the property are aware where it is parked, what product is in the vehicle, and have a representative watch over the vehicle while the driver is away.

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A placarded vehicle not carrying Division 1.1,1.2,or 1.3 explosives may be parked within 5 feet of a travelled roadway only when:
  • Authorized by your employer
  • You can safely get away with it
  • Authorized by the DOT
  • It is required by the work
Click here to look up the answer

From The CDL Manual

Parking Placarded Vehicle Not Transporting Division 1.1, 1.2 or 1.3 Explosives —

You may park a placarded vehicle (not laden with explosives) within 5 feet of the travelled part of the road only if your work requires it. Do so only briefly. Someone must always watch the vehicle when parked on a public roadway or shoulder. Do not uncouple a trailer and leave it with hazardous material on a public street. Do not park within 300 feet of an open fire.

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A person attending a placarded vehicle must do all of the following except:
  • Be able to move the vehicle if necessary
  • Know what to do in an emergency
  • Be within 300 feet of the vehicle with a clear view
  • Be within 100 feet of the vehicle with a clear view
Click here to look up the answer

From The CDL Manual

Attending Parked Vehicles —

The person watching a placarded vehicle must:

  • Be in the vehicle awake, not in the sleeper berth, or within 100 feet of the vehicle and have it within clear view,
  • Be aware of the hazards of the materials being transported,
  • Know what to do in emergencies, and
  • Be able to move the vehicle if needed.
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If you break down while transporting Division 1.2 explosives, you should only use flares:
  • Never use flares
  • Always use flares
  • When you have nothing else handy
  • In conjunction with reflective triangles
Click here to look up the answer

From The CDL Manual

No Flares —

You may break down and have to use stopped vehicle warning signals. Use reflective triangles or red electric lights. Never use burning signals, such as flares or fuses, around:

A tank used for Class 3 (flammable liquids) or Division 2.1 (flammable gas) whether loaded or empty.

A vehicle loaded with Division 1.1, 1.2, or 1.3 (Class A or B) explosives.

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Ultimately, the responsibility to know if you must use special routes or need special permits falls to:
  • The dispatcher
  • The shipper
  • The carrier
  • The driver
Click here to look up the answer

From The CDL Manual

Route Restrictions—

Some states and counties require permits to transport hazardous materials or waste. They may limit the routes you can use. Local rules about routes and permits change often. It is your job as driver to find out if you need permits or must use special routes. Make sure you have all needed papers before starting.

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