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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 Maryland hazmat test consists of 30 questions. To pass, you must correctly answer at least 24 questions (80%). The MD CDL hazmat test covers the information found in the Maryland 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. Checking the automatic transmission fluid level may require:
the vehicle to be parked downhill.
the 4-way emergency flashers to be activated.
you to pump the brake.
the engine to be running.
2. When driving in very hot weather, you may have to:
decrease your following distance.
increase your speed until the tires cool off.
watch out for black ice.
reduce your speed to prevent overheating.
3. Air brakes use ________ to make the brakes work.
compressed air
compressed gas cylinders
compressed gases
compressed oil
4. When going down a steep downgrade, you should primarily brake using:
the service brakes.
the braking effect of the engine.
the emergency brake.
the parking brake.
5. Your vehicle has hydraulic brakes. When you press the brake pedal while driving and the pedal goes to the floor, remember that:
pumping the brake pedal may generate enough hydraulic pressure to stop the vehicle.
shifting into neutral may help slow the vehicle.
the parking brake should never used to slow the vehicle.
All of the above.
6. Overloading can have negative effects on:
speed control.
All of the above.
7. You had to drive onto the right shoulder to avoid a crash. You are now driving at 40 mph on the shoulder. How should you move back onto the pavement?
Brake hard to slow the vehicle, then steer sharply onto the pavement.
If the shoulder is clear, stay on it until your vehicle has come to a stop, then move back onto the pavement when it is safe.
Keep moving at the present speed and steer very gently back onto the pavement.
None of the above.
8. After an accident, an improper use of flares could cause:
a fire if spilled fuel is on the ground.
air pressure to build from 50 to 100 psi within 2 minutes.
the vehicle to slide back and forth.
the springs to put on the brakes.
9. If you are driving on a slippery road, you should:
decrease your following distance.
use ABS to improve traction.
adjust your speed to conditions.
apply the brakes during turns.
10. When stopping you should push the brake pedal down:
as hard as you can.
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Hazmat CDL Test (MD)

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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