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CDL Combination Vehicles Endorsement Exam
(Latest 2026/2027 Update) Guide | 100%
Verified Questions & Correct Answers | Grade A
How many different hazard classes are there?
9
What placard must be used with an inhalation hazard load?
Poison/inhalation hazard
A truck carrying explosives has crashed with another vehicle. You should not pull them apart
until?
The explosives have been placed at least 200 feet away from the vehicles and occupied buildings
The shippers' package hazardous materials, and they must certify that this was done according to
the regulations. The only exception is when:
The shipper is a private carrier carrying his or her own product
Which signals may be used to warn of a stopped vehicle that contains explosives?
Reflective triangles
Class 8 is placarded as?
A placard corrosive at 1,001 lbs
The transport index of a radioactive material:
Tells the degree of control needed during transportation
A properly prepared uniform hazardous waste manifest:
Must be signed and carried by anyone transporting a hazardous waste
An "A" or "W" in the first column of the hazardous materials table means:
This material is only restricted when shipped by air and/or water
When is it necessary to ground the trailer?
When filling or unloading any flammable liquid tank, ground must be maintained until filling
hole is properly closed
, The total transport index of all radioactive material packages in a single vehicle must not exceed
________
50
Which of the following must drivers have in their possession while transporting class 1.1 or 1.3
explosives?
The written route plan
On a public roadway with a placarded tanker hauling flammable liquids, when can you transfer
from one tanker to another?
In an emergency
If in a materials class is the word forbidden, what kinds of materials are you still allowed to
haul?
You can't haul a forbidden cargo
What is the shape and size of a placard?
10 3/4 inch square or diamond
When handling packages of explosives, you must:
Never use hooks or other metal tools
Which of the following, if required, must the shipper put on the package
The name and address of shipper or consignee
The hazardous materials shipping name and identification number
The required label
Whenever your vehicle is placarded, do not drive near open fires unless you:
Can safely pass the fire without stopping
A hazard class name or ID number may not be used to describe a:
Non-hazardous material
Column 1, or the symbols column, the "I" means:
International transportation
What action should you take if you discover your hazardous materials shipment leaking at a rest
stop but there is no phone available?
Send someone for help with all the necessary information
In what location must you keep your shipping papers that describe any hazardous materials?
On the driver's seat whenever you are out of the vehicle
CDL Combination Vehicles Endorsement Exam
(Latest 2026/2027 Update) Guide | 100%
Verified Questions & Correct Answers | Grade A
How many different hazard classes are there?
9
What placard must be used with an inhalation hazard load?
Poison/inhalation hazard
A truck carrying explosives has crashed with another vehicle. You should not pull them apart
until?
The explosives have been placed at least 200 feet away from the vehicles and occupied buildings
The shippers' package hazardous materials, and they must certify that this was done according to
the regulations. The only exception is when:
The shipper is a private carrier carrying his or her own product
Which signals may be used to warn of a stopped vehicle that contains explosives?
Reflective triangles
Class 8 is placarded as?
A placard corrosive at 1,001 lbs
The transport index of a radioactive material:
Tells the degree of control needed during transportation
A properly prepared uniform hazardous waste manifest:
Must be signed and carried by anyone transporting a hazardous waste
An "A" or "W" in the first column of the hazardous materials table means:
This material is only restricted when shipped by air and/or water
When is it necessary to ground the trailer?
When filling or unloading any flammable liquid tank, ground must be maintained until filling
hole is properly closed
, The total transport index of all radioactive material packages in a single vehicle must not exceed
________
50
Which of the following must drivers have in their possession while transporting class 1.1 or 1.3
explosives?
The written route plan
On a public roadway with a placarded tanker hauling flammable liquids, when can you transfer
from one tanker to another?
In an emergency
If in a materials class is the word forbidden, what kinds of materials are you still allowed to
haul?
You can't haul a forbidden cargo
What is the shape and size of a placard?
10 3/4 inch square or diamond
When handling packages of explosives, you must:
Never use hooks or other metal tools
Which of the following, if required, must the shipper put on the package
The name and address of shipper or consignee
The hazardous materials shipping name and identification number
The required label
Whenever your vehicle is placarded, do not drive near open fires unless you:
Can safely pass the fire without stopping
A hazard class name or ID number may not be used to describe a:
Non-hazardous material
Column 1, or the symbols column, the "I" means:
International transportation
What action should you take if you discover your hazardous materials shipment leaking at a rest
stop but there is no phone available?
Send someone for help with all the necessary information
In what location must you keep your shipping papers that describe any hazardous materials?
On the driver's seat whenever you are out of the vehicle
