MN CDL HAZMAT TEST - PRACTICE TEST
11.
ID numbers are a _____ code used by first responders to identify hazardous materials.
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3-digit
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4-digit
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12-digit
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6-digit
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12.
On
a tractor-trailer equipped with a trailer brake hand
valve, the hand valve can be used to:
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hold compressed air.
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reduce the chance of the front wheels skidding.
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keep from rolling back.
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prevent movement of cargo.
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13.
To know how much space you should keep in front of you:
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estimate how many vehicle lengths there are between you and the vehicle ahead.
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estimate how many seconds it would take you to reach the vehicle ahead.
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wait until the vehicle ahead of you passes a clear landmark, then count off the seconds until you reach the same spot.
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None of the above.
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14.
You are driving on a steep downgrade in the proper low gear. Your "safe" speed is 40 mph. When your speed reaches 40 mph, you should:
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increase your speed to approximately 45 mph, and then apply release the brakes.
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maintain your current speed, and apply the brakes when you reach 50 mph to gradually reduce your speed to 40 mph.
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apply the brakes to gradually reduce your speed to 35 mph, and then release the brakes.
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apply the brakes to quickly reduce your speed to 25 mph, and then release the brakes.
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15.
Retarders:
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help slow a vehicle and reduce brake wear.
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apply their
braking power whenever
you push on the accelerator.
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help prevent accidents by applying extra braking power to the non-drive wheels.
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All of the above.
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16.
To recognize if the shipment includes hazardous materials, you should look at the shipping paper and:
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look at the shapes of containers.
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know what business is the shipper is in.
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see if there are tanks with diamond labels or placards on the premises.
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All of the above.
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17.
Which of the following is NOT a reason for hydraulic brake failure?
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Brake fade on long hills
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Stab braking
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Loss of hydraulic pressure
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All of the above.
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18.
If your vehicle does not have racks to hold cylinders of compressed gas, the cylinders must be:
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held upside down.
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bundled together with steel strapping.
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held upright.
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less than half of the cargo.
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19.
After an accident, an improper use of flares could cause:
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the springs to put on the brakes.
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the vehicle to slide back and forth.
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air pressure to build from 50 to 100 psi within 2 minutes.
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a fire if spilled fuel is on the ground.
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20.
When driving trucks with trailers, drivers should:
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push the brake pedal to the floor when braking.
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make quick lane changes.
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decrease their following distance.
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avoid making sudden movements with the steering wheel.
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