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Any driver, regardless of the vehicle Class, who wants to haul hazardous materials, must add an “H” endorsement to their CDL. In order to obtain the Hazmat endorsement drivers are required to pass a Transportation Security Administration background check and a knowledge test. The Texas hazmat test consists of 30 questions. To pass, you must correctly answer at least 24 questions (80%). The TX CDL hazmat test covers the information found in the Texas CDL Manual. Study the chapter covering hazardous materials to learn how to recognize, handle, and transport Hazmat, then take this practice test to prepare for your exam!
1. The power unit of placarded vehicles must have a fire extinguisher with a UL rating of _______ or more.
10 A:B
10 B:C
15 B:C
20 B:C
2. If a shipping paper describes both hazardous and non-hazardous products, the hazardous materials must be:
listed in yellow ink.
listed at the bottom.
in the same color as the non-hazardous materials.
highlighted in a contrasting color.
3. When transporting chlorine in cargo tanks, you must have _______ in the vehicle.
5 reflective triangles
approved goggles
an approved gas mask
an approved cell phone
4. When carrying division 1.1, 1.2, or 1.3 explosives, do not park within ______ of a bridge, tunnel, or building, except for short periods of time needed for vehicle operation necessities.
50 feet
300 feet
500 feet
1000 feet
5. To avoid becoming a distracted driver you should:
adjust all vehicle controls and mirrors while driving.
eat and drink while you drive.
not engage in complex conversations with others.
not turn off all communication devices.
6. When should you downshift automatic transmissions?
When you want to go faster.
When you start to get drowsy.
Watch your tachometer, and downshift when your engine reaches the top of the range.
When going down steep grades.
7. Which of the following is not a place where the shipping papers may be kept?
On the driver's seat when out of the vehicle.
In a pouch on the driver's door
In clear view within reach while driving.
In a pouch on the passenger's door
8. One way to prevent hydroplaning is to:
have less than 4/32 inch tread depth in every major groove on front tires.
make sure you have enough tread on your tires.
use the controlled braking method.
take curves at higher speeds.
9. Column 2 in the Hazardous Material Table contains:
the identification numbers.
the hazard class or division.
the HazMat description and shipping name.
the label codes.
10. Placards are used to:
warn motorcyclists to drive in another lane.
to give people something interesting to look at while they drive.
warn others of hazardous materials.
force other drivers to change lane.
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Hazmat CDL Test (TX)

Number of questions: 30
Correct answers to pass:24
Passing score:80%
Number of questions: 30
Correct answers to pass:24
Passing score:80%
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