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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 Idaho hazmat test consists of 30 questions. To pass, you must correctly answer at least 24 questions (80%). The ID CDL hazmat test covers the information found in the Idaho 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 tire load rating is stated:
on the side of each tire.
on each axle.
inside the suspension system.
2. When driving at night you should dim your lights when following another vehicle within:
500 feet.
100 feet.
1 mile.
3. Escape ramps:
should not be used unless you have already tried all other possible ways to save your vehicle after brake failure.
cannot be used by certain types of heavy vehicles.
are designed to stop runaway vehicles safely.
4. To avoid becoming a distracted driver you should:
not engage in complex conversations with others.
adjust all vehicle controls and mirrors while driving.
not turn off all communication devices.
5. You should flash your brake lights to warn drivers behind you when:
you see a bus stops in the roadway ahead to unload passengers.
you see a hazard that will require slowing down.
All of the above.
6. If you get stuck on railroad tracks, you should:
stay in the vehicle and call for help.
have a helper push your vehicle.
get out of the vehicle and away from the tracks.
7. Placards must be placed:
less than 3 inches away from any other markings.
so the words or numbers are read from left to right.
so that the format, color, and message can only be seen by the driver.
8. If you have to drive off the road, you should:
keep one set of wheels on the pavement, if possible.
brake as hard as you can to maintain control.
fully apply the brakes until your speed has dropped to about 20 mph.
9. When you use your mirrors while driving on the road, you should:
check them quickly.
only use the driver's side mirror.
avoid checking them regularly.
10. What is used to warn others of HazMat?
Security envelopes
Flashing lights
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ID CDL Hazmat Test

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